Question 1

In strongly territorial birds such as the indigo bunting, song is the main mechanism for securing g, defining, and defending an adequate breeding are. When population density is high, only the strongest males can retain a suitable are. The weakest males do not breed or are forced to nest on poor or marginal territories. During the breeding season, the male indigo bunting sings in his territory; each song lasts two or three seconds with a very short pause between songs, Melodic and rhythmic characteristics are produced by rapid changes in sound frequency and some regularity of silent periods between sounds. These modulated sounds form recognizable units, called figures, each of which is reproduced again and again with remarkable consistency. Despite the large frequency range of these sounds and the rapid frequency changes that the birds makes, the n umber of figures is very limited. Further, although we found some unique figures in different geographical populations, more than 90 percent of all Indigo bunting figures are extremely stable on the geographic basis. In our studies of isolated buntings we found that male indigo buntings are capable of singing many more types of figures than they usually do. Thus, it would seem that they copy their figures from other buntings they hear signing. Realizing that the ability to distinguish the songs of one species from those of another could be an important factor in the volition of the figures, we tested species recognition of a song. When we played a tape recording of a lazuli bunting or a painted bunting, male indigo bunting did not respond; Even when a dummy of male indigo bunting was placed near the tape recorder. Playing an indigo bunting song, however, usually brought an immediate response, making it clear that a male indigo bunting can readily distinguished songs of its own species from those of other species. The role of the songs figures in interspecies recognition was then examined. We created experimental songs composed of new figures by playing a normal song backwards, which changed the detailed forms of the figures without altering frequency ranges or gross temporal features. Since the male indigos gave almost a full response to the backward song, we concluded that a wide range of figures shapes can evoke positive responses. It seems likely, therefore, that a specific configuration is not essential for interspecies recognition, but it is clear that song figures must confirm to a particular frequency range, must be within narrow limits of duration, and must be spaced at particular intervals. There is evident that new figures may arise within a population through a slow process of change and selection. This variety is probably a valuable adaptation for survival: if every bird sang only a few types of figures, in dense woods or underbrush a female might have difficulty recognizing her mate's song and a male might not be able to distinguished a neighbor from a stranger. Our studies led us to conclude that there must be a balance between song stability and conservatism, which lead to clear-cut species recognition, and song variation, which leads to individual recognition. It can be inferred that a dummy of a male indigo bunting was placed near the tape recorder that played the songs of different species in order to try to
A) simulate the conditions in nature.
B) Rule out visual cues as a factor in species recognition
C) Supply an additional clue to species recognition for the indigo bunting
D) Provide data on the habits of bunting species other than then indigo bunting
E) Confound the indigo buntings in the experiment

Accepted Answer

The dummy was used to ensure that the indigo buntings were responding to the song itself and not to any visual cues, thereby ruling out visual cues as a factor in species recognition.

Question 2

Recent years have brought minority-owned businesses in the United States unprecedented opportunities-as well as new and significant risks. Civil rights activists have long argued that one of the principal reasons why Blacks, Hispanics and the other minority groups have difficulty establishing themselves in business is that they lack access to the sizable orders and subcontracts that are generated by large companies. Now congress, in apparent agreement, has required by law that businesses awarded federal contracts of more than $500,000 do their best to find minority subcontractors and record their efforts to do so on forms field with the government. Indeed, some federal and local agencies have gone so far as to set specific percentage goals for apportioning parts of public works contracts to minority enterprises. Corporate response appears to have been substantial. According to figures collected in 1977, the total of corporate contracts with minority business rose from $77 to $1. 1 billion in 1977. The projected total of corporate contracts with minority business for the early 1980's is estimated to be over $3 billion per year with no letup anticipated in the next decade. Promising as it is for minority businesses, this increased patronage poses dangers for them, too. First, minority firms risk expanding too fast and overextending themselves financially, since most are small concerns and, unlike large businesses they often need to make substantial investments in new plants, staff, equipment, and the like in order to perform work subcontracted to them. If, thereafter, their subcontracts are for some reason reduced, such firms can face potentially crippling fixed expenses. The world of corporate purchasing can be frustrating for small entrepreneurs who get requests for elaborate formal estimates and bids. Both consume valuable time and resources and a small company's efforts must soon result in orders, or both the morale and the financial health of the business will suffer. A second risk is that White-owned companies may-seek to cash inon the increasing apportionments through formation of joint ventures with minority-owned concerns, of course, in many instances there are legitimate reasons for joint ventures; clearly, white and minority enterprises can team up to acquire business that neither could Third, a minority enterprise that secures the business of one large corporate customer often runs the danger of becoming - and remaining dependent. Even in the best of circumstances, fierce competition from larger, more established companies makes it difficult for small concerns to broaden their customer bases; when such firms have nearly guaranteed orders from a single corporate benefactor, they may truly have to struggle against complacency arising from their current success. The passage suggests that the failure of a large business to have its bids for subcontracts results quickly in order might cause it to
A) experience frustrations but not serious financial harm
B) face potentially crippling fixed expenses
C) have to record its efforts on forms filed with the government
D) increase its spending with minority subcontractors
E) revise its procedure for making bids for federal contracts and subcontracts

Accepted Answer

Large businesses are less likely to face serious financial harm from delays in securing orders, unlike small minority-owned businesses that may suffer from such delays.

Question 3

Woodraw Wilson was referring to the liberal idea of the economic market when he said that the free enterprise system is the most efficient economic system. Maximum freedom means maximum productiveness; our "openness" is to be the measure of our stability. Fascination with this ideal has made Americans defy the "Old World" categories of settled possessiveness versus unsettling deprivation., the cupidity of retention versus the cupidity of seizure, a "status quo" defended of attacked. The United States, it was believed, had no status quo ante. Our only "station" was the turning of a stationary wheel, spinning faster and faster. We did not base our system on property but opportunity-which meant we based it not on stability but on mobility. The more things changed, that is, the more rapidly the wheel turned, the steadier we would be. The conventional picture of class politics is composed of the Haves, who want a stability to keep what they have, and Have-Nots, who want a touch of instability and change in which to scramble for the things they have not. But Americans imagined a condition in which speculators, self-makers, runners are always using the new opportunities given by our land. These economic leaders (front-runners) would thus be mainly agents of Change. The nonstarters were considered the ones who wanted stability, a strong referee to give them some position in the race, a regulative hand to calm manic speculation; an authority that can call things to a half begin things again from compensatorily staggered "starting lines".:Reform" in America has been sterile because it can imagine no change except through the extension of this metaphor of the race, wider inclusion of competitors, "a piece of the action." As it were, of the disenfranchised. There is no attempt to call off the race. Since our only stability is change. America seems not to honor the quite work that achieves social interdependence and stability. There is, in our legends, no heroism of the office clerk, no stable industrial work force of the people who actually make the system work. There is no pride in being an employee (Wilson asked for a return to the time when everyone was an employer). There has been no boasting about our social workers-they are need; empty boasts from the past make us ashamed of our present achievements, make us try to forget or deny the, move away from them. There is no honor but in the wonderland race we must all run, all trying to win, none winning in the end (for there is no end). The primary purpose of the passage is to
A) criticize the inflexibility of American economic mythology
B) contrast "Old World" and "New World" economic ideologies
C) challenge the integrity of traditional political leaders
D) champion those Americans whom the author deems to be neglected
E) suggests a substitute for the traditional metaphor of a race

Accepted Answer

The passage criticizes the American economic mythology for its inflexibility and focus on constant change and competition, rather than stability and social interdependence.

Question 4

Recent years have brought minority-owned businesses in the United States unprecedented opportunities-as well as new and significant risks. Civil rights activists have long argued that one of the principal reasons why Blacks, Hispanics and the other minority groups have difficulty establishing themselves in business is that they lack access to the sizable orders and subcontracts that are generated by large companies. Now congress, in apparent agreement, has required by law that businesses awarded federal contracts of more than $500,000 do their best to find minority subcontractors and record their efforts to do so on forms field with the government. Indeed, some federal and local agencies have gone so far as to set specific percentage goals for apportioning parts of public works contracts to minority enterprises. Corporate response appears to have been substantial. According to figures collected in 1977, the total of corporate contracts with minority business rose from $77 to $1. 1 billion in 1977. The projected total of corporate contracts with minority business for the early 1980's is estimated to be over $3 billion per year with no letup anticipated in the next decade. Promising as it is for minority businesses, this increased patronage poses dangers for them, too. First, minority firms risk expanding too fast and overextending themselves financially, since most are small concerns and, unlike large businesses they often need to make substantial investments in new plants, staff, equipment, and the like in order to perform work subcontracted to them. If, thereafter, their subcontracts are for some reason reduced, such firms can face potentially crippling fixed expenses. The world of corporate purchasing can be frustrating for small entrepreneurs who get requests for elaborate formal estimates and bids. Both consume valuable time and resources and a small company's efforts must soon result in orders, or both the morale and the financial health of the business will suffer. A second risk is that White-owned companies may-seek to cash inon the increasing apportionments through formation of joint ventures with minority-owned concerns, of course, in many instances there are legitimate reasons for joint ventures; clearly, white and minority enterprises can team up to acquire business that neither could Third, a minority enterprise that secures the business of one large corporate customer often runs the danger of becoming - and remaining dependent. Even in the best of circumstances, fierce competition from larger, more established companies makes it difficult for small concerns to broaden their customer bases; when such firms have nearly guaranteed orders from a single corporate benefactor, they may truly have to struggle against complacency arising from their current success. The passage supplies information that would response which of the following questions?
A) What federal agencies have set percentage goals for the use of minority owned businesses in public works contracts?
B) To which governments agencies must businesses awarded federal contracts report their efforts to find minority subcontractors?
C) How widespread is the use of minority-owned concerns as "fronts; by White backers seeking to obtain subcontracts?
D) How many more minority owned businesses were there in 1977 than in 1972?
E) What is one set of conditions under which a small business might find itself financially overextended?

Accepted Answer

The passage explains that minority firms risk financial overextension when they expand too quickly to meet the demands of new subcontracts, requiring substantial investments in new plants, staff, and equipment.

Question 5

Those examples of poetic justice that occur in medieval and Elizabethan literature, and that seem so satisfying, have encouraged a whole school of twentieth-century scholars to "find" further examples. In fact, these scholars have merely forced victimized character into a moral framework by which the injustices inflicted on them are, somehow or other, justified. Such scholars deny that the sufferers in a tragedy are innocent; they blame the victims themselves for their tragic fates. Any misdoing is enough to subject a character to critical whips. Thus, there are long essays about the misdemeanors of Webster's Duchess of Malfi, who defined her brothers, and he behavior of Shakespeare's Desdemona, who disobeyed her father. Yet it should be remembered that the Renaissance writer Matteo Bandello strongly protests the injustice of the severe penalties issued to women for acts of disobedience that men could, and did, commit with virtual impunity. And Shakespeare, Chaucer, and Webster often enlist their readers on the side of their tragic heroines by describing injustices so cruel that readers cannot but join in protest. By portraying Griselda, in the Clerk's Tale, as a meek, gentle victim who does not criticize, much less rebel against the prosecutor, her husband Walter, Chaucer incites readers to espouse Griselda's cause against Walter's oppression. Thus, efforts to supply historical and theological rationalization for Walter's persecutions tend to turn Chaucer's fable upside down, to deny its most obvious effect on reader's sympathies. Similarly, to assert that Webster's Duchess deserved torture and death because she chose to marry the man she loved and to bear their children is, in effect to join forces with her tyrannical brothers, and so to confound the operation of poetic justice, of which readers should approve, with precisely those examples of social injustice that Webster does everything in his power to make readers condemn. Indeed. Webster has his heroin so heroically lead the resistance to tyranny that she may well in spire members of the audience to imaginatively join forces with her against the cruelty and hypocritical morality of her brothers. Thus Chaucer and Webster, in their different ways, attack injustice, argue on behalf of the victims, and prosecute the persecutors. Their readers serve them as a court of appeal that remains free to rule, as the evidence requires, and as common humanity requires, in favour of the innocent and injured parties. For, to paraphrase the noted eighteenth-century scholar, Samuel Johnson, despite all the refinements of subtlety and the dogmatism of learning, it is by the common sense and compassion of readers who are uncorrupted by the characters and situations in mereval and Elizabethan literature, as in any other literature, can best be judged. It can be interred from the passage that the author consider Chaucer's Grisselda to be
A) an innocent victim
B) a sympathetic judge
C) an imprudent person
D) a strong individual
E) a rebellious daughter

Accepted Answer

The passage describes Griselda as a "meek, gentle victim" who does not criticize or rebel against her husband, Walter, indicating that the author views her as an innocent victim.

Question 6

Recent years have brought minority-owned businesses in the United States unprecedented opportunities-as well as new and significant risks. Civil rights activists have long argued that one of the principal reasons why Blacks, Hispanics and the other minority groups have difficulty establishing themselves in business is that they lack access to the sizable orders and subcontracts that are generated by large companies. Now congress, in apparent agreement, has required by law that businesses awarded federal contracts of more than $500,000 do their best to find minority subcontractors and record their efforts to do so on forms field with the government. Indeed, some federal and local agencies have gone so far as to set specific percentage goals for apportioning parts of public works contracts to minority enterprises. Corporate response appears to have been substantial. According to figures collected in 1977, the total of corporate contracts with minority business rose from $77 to $1. 1 billion in 1977. The projected total of corporate contracts with minority business for the early 1980's is estimated to be over $3 billion per year with no letup anticipated in the next decade. Promising as it is for minority businesses, this increased patronage poses dangers for them, too. First, minority firms risk expanding too fast and overextending themselves financially, since most are small concerns and, unlike large businesses they often need to make substantial investments in new plants, staff, equipment, and the like in order to perform work subcontracted to them. If, thereafter, their subcontracts are for some reason reduced, such firms can face potentially crippling fixed expenses. The world of corporate purchasing can be frustrating for small entrepreneurs who get requests for elaborate formal estimates and bids. Both consume valuable time and resources and a small company's efforts must soon result in orders, or both the morale and the financial health of the business will suffer. A second risk is that White-owned companies may-seek to cash inon the increasing apportionments through formation of joint ventures with minority-owned concerns, of course, in many instances there are legitimate reasons for joint ventures; clearly, white and minority enterprises can team up to acquire business that neither could Third, a minority enterprise that secures the business of one large corporate customer often runs the danger of becoming - and remaining dependent. Even in the best of circumstances, fierce competition from larger, more established companies makes it difficult for small concerns to broaden their customer bases; when such firms have nearly guaranteed orders from a single corporate benefactor, they may truly have to struggle against complacency arising from their current success. The authors implied that the minority owned concern that does the greater part of its business with one large corporate customer should
A) avoid competition with the larger, more established concerns by not expanding
B) concentrate on securing even more business from that corporation
C) try to expands its customers base to avoid becoming dependent on the corporation
D) pass on some of the work to be done for the corporation to other minority owned concerns.
E) use its influence with the other corporation to promote subcontracting with other minority concerns.

Accepted Answer

The author suggests that minority-owned businesses should try to expand their customer base to avoid becoming dependent on a single large corporate customer. This would help them mitigate the risk of over-reliance on one source of business.

Question 7

Those examples of poetic justice that occur in medieval and Elizabethan literature, and that seem so satisfying, have encouraged a whole school of twentieth-century scholars to "find" further examples. In fact, these scholars have merely forced victimized character into a moral framework by which the injustices inflicted on them are, somehow or other, justified. Such scholars deny that the sufferers in a tragedy are innocent; they blame the victims themselves for their tragic fates. Any misdoing is enough to subject a character to critical whips. Thus, there are long essays about the misdemeanors of Webster's Duchess of Malfi, who defined her brothers, and he behavior of Shakespeare's Desdemona, who disobeyed her father. Yet it should be remembered that the Renaissance writer Matteo Bandello strongly protests the injustice of the severe penalties issued to women for acts of disobedience that men could, and did, commit with virtual impunity. And Shakespeare, Chaucer, and Webster often enlist their readers on the side of their tragic heroines by describing injustices so cruel that readers cannot but join in protest. By portraying Griselda, in the Clerk's Tale, as a meek, gentle victim who does not criticize, much less rebel against the prosecutor, her husband Walter, Chaucer incites readers to espouse Griselda's cause against Walter's oppression. Thus, efforts to supply historical and theological rationalization for Walter's persecutions tend to turn Chaucer's fable upside down, to deny its most obvious effect on reader's sympathies. Similarly, to assert that Webster's Duchess deserved torture and death because she chose to marry the man she loved and to bear their children is, in effect to join forces with her tyrannical brothers, and so to confound the operation of poetic justice, of which readers should approve, with precisely those examples of social injustice that Webster does everything in his power to make readers condemn. Indeed. Webster has his heroin so heroically lead the resistance to tyranny that she may well in spire members of the audience to imaginatively join forces with her against the cruelty and hypocritical morality of her brothers. Thus Chaucer and Webster, in their different ways, attack injustice, argue on behalf of the victims, and prosecute the persecutors. Their readers serve them as a court of appeal that remains free to rule, as the evidence requires, and as common humanity requires, in favour of the innocent and injured parties. For, to paraphrase the noted eighteenth-century scholar, Samuel Johnson, despite all the refinements of subtlety and the dogmatism of learning, it is by the common sense and compassion of readers who are uncorrupted by the characters and situations in mereval and Elizabethan literature, as in any other literature, can best be judged. The author's tone in her discussion of the conclusions reached by the "school of twentieth-century scholars" (line 4) is best described as
A) plaintive
B) philosophical
C) disparaging
D) apologetic
E) enthusiastic

Accepted Answer

The author criticizes the twentieth-century scholars for forcing characters into a moral framework and blames them for justifying injustices, indicating a disparaging tone.

Question 8

Recent years have brought minority-owned businesses in the United States unprecedented opportunities-as well as new and significant risks. Civil rights activists have long argued that one of the principal reasons why Blacks, Hispanics and the other minority groups have difficulty establishing themselves in business is that they lack access to the sizable orders and subcontracts that are generated by large companies. Now congress, in apparent agreement, has required by law that businesses awarded federal contracts of more than $500,000 do their best to find minority subcontractors and record their efforts to do so on forms field with the government. Indeed, some federal and local agencies have gone so far as to set specific percentage goals for apportioning parts of public works contracts to minority enterprises. Corporate response appears to have been substantial. According to figures collected in 1977, the total of corporate contracts with minority business rose from $77 to $1. 1 billion in 1977. The projected total of corporate contracts with minority business for the early 1980's is estimated to be over $3 billion per year with no letup anticipated in the next decade. Promising as it is for minority businesses, this increased patronage poses dangers for them, too. First, minority firms risk expanding too fast and overextending themselves financially, since most are small concerns and, unlike large businesses they often need to make substantial investments in new plants, staff, equipment, and the like in order to perform work subcontracted to them. If, thereafter, their subcontracts are for some reason reduced, such firms can face potentially crippling fixed expenses. The world of corporate purchasing can be frustrating for small entrepreneurs who get requests for elaborate formal estimates and bids. Both consume valuable time and resources and a small company's efforts must soon result in orders, or both the morale and the financial health of the business will suffer. A second risk is that White-owned companies may-seek to cash inon the increasing apportionments through formation of joint ventures with minority-owned concerns, of course, in many instances there are legitimate reasons for joint ventures; clearly, white and minority enterprises can team up to acquire business that neither could Third, a minority enterprise that secures the business of one large corporate customer often runs the danger of becoming - and remaining dependent. Even in the best of circumstances, fierce competition from larger, more established companies makes it difficult for small concerns to broaden their customer bases; when such firms have nearly guaranteed orders from a single corporate benefactor, they may truly have to struggle against complacency arising from their current success. The author would most likely agree with which of the following statements about corporate response to working with minority subcontractors?
A) Annoyed by the proliferations of "front" organizations, corporate are likely to reduce their efforts to work with minority owned subcontractors in the near future.
B) Although corporations showed considerable interest in working with minority businesses in the 1970's their aversion to government paperwork made them reluctant to pursue many government contracts.
C) The significant response of corporation in the 1970's is likely to be sustained and conceivably be increased throughout the 1980's
D) Although corporations reeager to co-operate with minority owned businesses, a shortage of capital in the 1970's made substantial response impossible.
E) The enormous corporate response has all but eliminated the dangers of over expansion that used to plague small minority owned businesses.

Accepted Answer

The passage indicates that corporate contracts with minority businesses increased significantly in the 1970s and projects continued growth into the 1980s, suggesting a sustained and possibly increasing response.

Question 9

The discoveries of the white dwarf, the neutron star, and the black hole, coming well after the discovery of the red giant are among eh most exciting developments in decades because they may be well present physicists with their greatest challenge since the failure of classical mechanics. In the life cycle of the star, after all of the hydrogen and helium fuel has been burned, the delicate balance between the outer nuclear radiations. Pressure and the stable gravitational force become disturbed and slow contraction begins. As compression increases, very dense plasma forms. If the initial star had mass of less than 1.4 solar masses (1.4 times the mass of our sun), the process ceases at the density of 1,000 tons per cubic inch, and the star becomes the white dwarf. However, if the star was originally more massive, the white dwarf plasma can't resist the gravitations pressures, and in rapid collapse, all nuclei of the star are converted to a gas of free neutrons. Gravitational attraction compresses this neutron gas rapidly until a density of 10 tons per cubic inch is reached; at this point the strong nuclear force resists further contraction. If the mass of the star was between 1.4 and a few solar masses, the process stops here, and we have a neutron star. But if the original star was more massive than a few solar masses, even the strong nuclear forces cannot resist the gravitational brunch. The neutrons are forced into one another to form heavier hadrons and these in turn coalesce to form heavier entities, of which we as yet know nothing. At this point, a complete collapse of the stellar mass occurs; existing theories predict a collapse to infinite density and infinitely small dimensions Well before this, however, the surface gravitational force would become so strong that no signal could ever leave the star - any photon emitted would fall back under gravitational attraction - and the star would become black hole in space. This gravitational collapse poses a fundamental challenge to physics. When the most widely accepted theories predict such improbable things as infinite density and infinitely small dimensions, it simply means that we are missing some vital insight. This last happened in physics in the 1930's, when we faced the fundamental paradox concerning atomic structure. At that time, it was recognized that electrons moved in table orbits about nuclei in atoms. However, it was also recognized that if charge is accelerated, as it must be to remain in orbit, it radiates energy; so, theoretically, the electron would be expected eventually to spiral into the nucleus and destroy the atom. Studies centered around this paradox led to the development of quantum mechanics. It may well be that an equivalent t advance awaits us in investigating the theoretical problems presented by the phenomenon of gravitational collapse. The primary purpose of the passage is to
A) offer new explanations for the collapse of stars.
B) explain the origins of black holes, neutron stars, and white dwarfs.
C) compare the structure of atoms with the structure of the solar system.
D) explain how the collapse of stars challenges accepted theories of physics.
E) describe the imbalance between radiation pressure and gravitational force

Accepted Answer

The passage primarily discusses how the collapse of stars, leading to phenomena like black holes, presents a challenge to current physics theories, similar to past challenges that led to significant advances like quantum mechanics.

Question 10

Those examples of poetic justice that occur in medieval and Elizabethan literature, and that seem so satisfying, have encouraged a whole school of twentieth-century scholars to "find" further examples. In fact, these scholars have merely forced victimized character into a moral framework by which the injustices inflicted on them are, somehow or other, justified. Such scholars deny that the sufferers in a tragedy are innocent; they blame the victims themselves for their tragic fates. Any misdoing is enough to subject a character to critical whips. Thus, there are long essays about the misdemeanors of Webster's Duchess of Malfi, who defined her brothers, and he behavior of Shakespeare's Desdemona, who disobeyed her father. Yet it should be remembered that the Renaissance writer Matteo Bandello strongly protests the injustice of the severe penalties issued to women for acts of disobedience that men could, and did, commit with virtual impunity. And Shakespeare, Chaucer, and Webster often enlist their readers on the side of their tragic heroines by describing injustices so cruel that readers cannot but join in protest. By portraying Griselda, in the Clerk's Tale, as a meek, gentle victim who does not criticize, much less rebel against the prosecutor, her husband Walter, Chaucer incites readers to espouse Griselda's cause against Walter's oppression. Thus, efforts to supply historical and theological rationalization for Walter's persecutions tend to turn Chaucer's fable upside down, to deny its most obvious effect on reader's sympathies. Similarly, to assert that Webster's Duchess deserved torture and death because she chose to marry the man she loved and to bear their children is, in effect to join forces with her tyrannical brothers, and so to confound the operation of poetic justice, of which readers should approve, with precisely those examples of social injustice that Webster does everything in his power to make readers condemn. Indeed. Webster has his heroin so heroically lead the resistance to tyranny that she may well in spire members of the audience to imaginatively join forces with her against the cruelty and hypocritical morality of her brothers. Thus Chaucer and Webster, in their different ways, attack injustice, argue on behalf of the victims, and prosecute the persecutors. Their readers serve them as a court of appeal that remains free to rule, as the evidence requires, and as common humanity requires, in favour of the innocent and injured parties. For, to paraphrase the noted eighteenth-century scholar, Samuel Johnson, despite all the refinements of subtlety and the dogmatism of learning, it is by the common sense and compassion of readers who are uncorrupted by the characters and situations in mereval and Elizabethan literature, as in any other literature, can best be judged. The author of the passage is primarily concerned with
A) reconciling opposing viewpoints
B) encouraging innovative approaches
C) defending an accepted explanation
D) advocating an alternative interpretation
E) analyzing an unresolved question

Accepted Answer

The author is advocating an alternative interpretation by arguing against the scholars who justify the injustices in literature and instead supports the view that authors like Chaucer and Webster intended to highlight and criticize these injustices.

Question 11

Recent years have brought minority-owned businesses in the United States unprecedented opportunities-as well as new and significant risks. Civil rights activists have long argued that one of the principal reasons why Blacks, Hispanics and the other minority groups have difficulty establishing themselves in business is that they lack access to the sizable orders and subcontracts that are generated by large companies. Now congress, in apparent agreement, has required by law that businesses awarded federal contracts of more than $500,000 do their best to find minority subcontractors and record their efforts to do so on forms field with the government. Indeed, some federal and local agencies have gone so far as to set specific percentage goals for apportioning parts of public works contracts to minority enterprises. Corporate response appears to have been substantial. According to figures collected in 1977, the total of corporate contracts with minority business rose from $77 to $1. 1 billion in 1977. The projected total of corporate contracts with minority business for the early 1980's is estimated to be over $3 billion per year with no letup anticipated in the next decade. Promising as it is for minority businesses, this increased patronage poses dangers for them, too. First, minority firms risk expanding too fast and overextending themselves financially, since most are small concerns and, unlike large businesses they often need to make substantial investments in new plants, staff, equipment, and the like in order to perform work subcontracted to them. If, thereafter, their subcontracts are for some reason reduced, such firms can face potentially crippling fixed expenses. The world of corporate purchasing can be frustrating for small entrepreneurs who get requests for elaborate formal estimates and bids. Both consume valuable time and resources and a small company's efforts must soon result in orders, or both the morale and the financial health of the business will suffer. A second risk is that White-owned companies may-seek to cash inon the increasing apportionments through formation of joint ventures with minority-owned concerns, of course, in many instances there are legitimate reasons for joint ventures; clearly, white and minority enterprises can team up to acquire business that neither could Third, a minority enterprise that secures the business of one large corporate customer often runs the danger of becoming - and remaining dependent. Even in the best of circumstances, fierce competition from larger, more established companies makes it difficult for small concerns to broaden their customer bases; when such firms have nearly guaranteed orders from a single corporate benefactor, they may truly have to struggle against complacency arising from their current success. According to the passage, civil rights activists maintain that one disadvantage under which minority owned businesses have traditionally had to labor is that they have
A) been specially vulnerable to governmental
B) been denied bank loans at rates comparable to those afforded larger competitors
C) not had sufficient opportunity to secure businesses created by large corporations
D) not been able to advertise in those media that reach large numbers of potential customers
E) not had adequate representation in the centers of government power.

Accepted Answer

Civil rights activists argue that minority-owned businesses have struggled due to a lack of access to large orders and subcontracts from big companies.

Question 12

The discoveries of the white dwarf, the neutron star, and the black hole, coming well after the discovery of the red giant are among eh most exciting developments in decades because they may be well present physicists with their greatest challenge since the failure of classical mechanics. In the life cycle of the star, after all of the hydrogen and helium fuel has been burned, the delicate balance between the outer nuclear radiation. Pressure and the stable gravitational force becomes disturbed and slow contraction begins. As compression increases, very dense plasma forms. If the initial star had mass of less than 1.4 solar masses (1.4 times the mass of our sun), the process ceases at the density of 1,000 tons per cubic inch, and the star becomes the white dwarf. However, if the star was originally more massive, the white dwarf plasma can't resist the gravitations pressures, and in rapid collapse, all nuclei of the star are converted to a gas of free neutrons. Gravitational attraction compresses this neutron gas rapidly until a density of 10 tons per cubic inch is reached; at this point the strong nuclear force resists further contraction. If the mass of the star was between 1.4 and a few solar masses, the process stops here, and we have a neutron star. But if the original star was more massive than a few solar masses, even the strong nuclear forces cannot resist the gravitational brunch. The neutrons are forced into one another to form heavier hadrons and these in turn coalesce to form heavier entities, of which we as yet know nothing. At this point, a complete collapse of the stellar mass occurs; existing theories predict a collapse to infinite density and infinitely small dimensions Well before this, however, the surface gravitational force would become so strong that no signal could ever leave the star - any photon emitted would fall back under gravitational attraction - and the star would become black hole in space. This gravitational collapse poses a fundamental challenge to physics. When the most widely accepted theories predict such improbable things as infinite density and infinitely small dimensions, it simply means that we are missing some vital insight. This last happened in physics in the 1930's, when we faced the fundamental paradox concerning atomic structure. At that time, it was recognized that electrons moved in table orbits about nuclei in atoms. However, it was also recognized that if charge is accelerated, as it must be to remain in orbit, it radiates energy; so, theoretically, the electron would be expected eventually to spiral into the nucleus and destroy the atom. Studies centered around this paradox led to the development of quantum mechanics. It may well be that an equivalent t advance awaits us in investigating the theoretical problems presented by the phenomenon of gravitational collapse. According to the passage, an imbalance arises between nuclear radiation pressure and gravitational force in stars because
A) the density of a star increases as it ages
B) radiation pressure increases as a star increases in mass
C) radiation pressure decreases when a star's fuel has been consumed
D) the collapse of a star increases its gravitational force.
E) dense plasma decreases the star's gravitational force.

Accepted Answer

The passage explains that the imbalance occurs when all the hydrogen and helium fuel has been burned, leading to a decrease in nuclear radiation pressure.

Question 13

Recent years have brought minority-owned businesses in the United States unprecedented opportunities-as well as new and significant risks. Civil rights activists have long argued that one of the principal reasons why Blacks, Hispanics and the other minority groups have difficulty establishing themselves in business is that they lack access to the sizable orders and subcontracts that are generated by large companies. Now congress, in apparent agreement, has required by law that businesses awarded federal contracts of more than $500,000 do their best to find minority subcontractors and record their efforts to do so on forms field with the government. Indeed, some federal and local agencies have gone so far as to set specific percentage goals for apportioning parts of public works contracts to minority enterprises. Corporate response appears to have been substantial. According to figures collected in 1977, the total of corporate contracts with minority business rose from $77 to $1. 1 billion in 1977. The projected total of corporate contracts with minority business for the early 1980's is estimated to be over $3 billion per year with no letup anticipated in the next decade. Promising as it is for minority businesses, this increased patronage poses dangers for them, too. First, minority firms risk expanding too fast and overextending themselves financially, since most are small concerns and, unlike large businesses they often need to make substantial investments in new plants, staff, equipment, and the like in order to perform work subcontracted to them. If, thereafter, their subcontracts are for some reason reduced, such firms can face potentially crippling fixed expenses. The world of corporate purchasing can be frustrating for small entrepreneurs who get requests for elaborate formal estimates and bids. Both consume valuable time and resources and a small company's efforts must soon result in orders, or both the morale and the financial health of the business will suffer. A second risk is that White-owned companies may-seek to cash inon the increasing apportionments through formation of joint ventures with minority-owned concerns, of course, in many instances there are legitimate reasons for joint ventures; clearly, white and minority enterprises can team up to acquire business that neither could Third, a minority enterprise that secures the business of one large corporate customer often runs the danger of becoming - and remaining dependent. Even in the best of circumstances, fierce competition from larger, more established companies makes it difficult for small concerns to broaden their customer bases; when such firms have nearly guaranteed orders from a single corporate benefactor, they may truly have to struggle against complacency arising from their current success. It can be inferred from the passage that, compared with the requirements of law, the percentage goals set by "some federal and local agencies" are
A) more popular with large corporations
B) more specific
C) less controversial
D) less expensive to enforce
E) easier to comply with

Accepted Answer

The passage suggests that some federal and local agencies have set specific percentage goals for minority contracts, implying these goals are more specific than the general legal requirements.

Question 14

The discoveries of the white dwarf, the neutron star, and the black hole, coming well after the discovery of the red giant are among eh most exciting developments in decades because they may be well present physicists with their greatest challenge since the failure of classical mechanics. In the life cycle of the star, after all of the hydrogen and helium fuel has been burned, the delicate balance between the outer nuclear radiation. Pressure and the stable gravitational force becomes disturbed and slow contraction begins. As compression increases, very dense plasma forms. If the initial star had mass of less than 1.4 solar masses (1.4 times the mass of our sun), the process ceases at the density of 1,000 tons per cubic inch, and the star becomes the white dwarf. However, if the star was originally more massive, the white dwarf plasma can't resist the gravitations pressures, and in rapid collapse, all nuclei of the star are converted to a gas of free neutrons. Gravitational attraction compresses this neutron gas rapidly until a density of 10 tons per cubic inch is reached; at this point the strong nuclear force resists further contraction. If the mass of the star was between 1.4 and a few solar masses, the process stops here, and we have a neutron star. But if the original star was more massive than a few solar masses, even the strong nuclear forces cannot resist the gravitational brunch. The neutrons are forced into one another to form heavier hadrons and these in turn coalesce to form heavier entities, of which we as yet know nothing. At this point, a complete collapse of the stellar mass occurs; existing theories predict a collapse to infinite density and infinitely small dimensions Well before this, however, the surface gravitational force would become so strong that no signal could ever leave the star - any photon emitted would fall back under gravitational attraction - and the star would become black hole in space. This gravitational collapse poses a fundamental challenge to physics. When the most widely accepted theories predict such improbable things as infinite density and infinitely small dimensions, it simply means that we are missing some vital insight. This last happened in physics in the 1930's, when we faced the fundamental paradox concerning atomic structure. At that time, it was recognized that electrons moved in table orbits about nuclei in atoms. However, it was also recognized that if charge is accelerated, as it must be to remain in orbit, it radiates energy; so, theoretically, the electron would be expected eventually to spiral into the nucleus and destroy the atom. Studies centered around this paradox led to the development of quantum mechanics. It may well be that an equivalent t advance awaits us in investigating the theoretical problems presented by the phenomenon of gravitational collapse. The author asserts that the discoveries of the white dwarf, the neutron star, and the black hole are significant because these discoveries.
A) demonstrate the probability of infinite density and infinitely small dimensions
B) pose the most comprehensive and fundamental problem faced by physicists in decades
C) clarify the paradox suggested by the collapse of electrons into atomic nuclei.
D) establish the relationship between the mass and gravitational pressure.
E) assist in establishing the age of the universe by tracing the life histories of stars.

Accepted Answer

These discoveries challenge existing theories and present a fundamental problem in physics, similar to the challenge faced with atomic structure that led to quantum mechanics.

Question 15

Those examples of poetic justice that occur in medieval and Elizabethan literature, and that seem so satisfying, have encouraged a whole school of twentieth-century scholars to "find" further examples. In fact, these scholars have merely forced victimized character into a moral framework by which the injustices inflicted on them are, somehow or other, justified. Such scholars deny that the sufferers in a tragedy are innocent; they blame the victims themselves for their tragic fates. Any misdoing is enough to subject a character to critical whips. Thus, there are long essays about the misdemeanors of Webster's Duchess of Malfi, who defined her brothers, and he behavior of Shakespeare's Desdemona, who disobeyed her father. Yet it should be remembered that the Renaissance writer Matteo Bandello strongly protests the injustice of the severe penalties issued to women for acts of disobedience that men could, and did, commit with virtual impunity. And Shakespeare, Chaucer, and Webster often enlist their readers on the side of their tragic heroines by describing injustices so cruel that readers cannot but join in protest. By portraying Griselda, in the Clerk's Tale, as a meek, gentle victim who does not criticize, much less rebel against the prosecutor, her husband Walter, Chaucer incites readers to espouse Griselda's cause against Walter's oppression. Thus, efforts to supply historical and theological rationalization for Walter's persecutions tend to turn Chaucer's fable upside down, to deny its most obvious effect on reader's sympathies. Similarly, to assert that Webster's Duchess deserved torture and death because she chose to marry the man she loved and to bear their children is, in effect to join forces with her tyrannical brothers, and so to confound the operation of poetic justice, of which readers should approve, with precisely those examples of social injustice that Webster does everything in his power to make readers condemn. Indeed. Webster has his heroin so heroically lead the resistance to tyranny that she may well in spire members of the audience to imaginatively join forces with her against the cruelty and hypocritical morality of her brothers. Thus Chaucer and Webster, in their different ways, attack injustice, argue on behalf of the victims, and prosecute the persecutors. Their readers serve them as a court of appeal that remains free to rule, as the evidence requires, and as common humanity requires, in favour of the innocent and injured parties. For, to paraphrase the noted eighteenth-century scholar, Samuel Johnson, despite all the refinements of subtlety and the dogmatism of learning, it is by the common sense and compassion of readers who are uncorrupted by the characters and situations in mereval and Elizabethan literature, as in any other literature, can best be judged. As described in the passage, the process by which some twentieth-century scholars have reached their conclusions about the blameworthiness of victims in medieval and Elizabethan literary works is mot similar to which off the following?
A) Derivation of logically sound conclusions from well-founded premises
B) Accurate observation of data, inaccurate calculation of statistics, and drawing of incorrect conclusions form the faulty statistics
C) Establishment of a theory, application of the theory to ill-fittings data, and drawing of unwarranted conclusions from the data
D) Development of two schools of thought about a factual situation, debate between the two schools, and rendering of a balanced judgment by an objective observer
E) Consideration of a factual situation by a group, discussion of various possible explanatory hypotheses and agreement by consensus on the most plausible explanation.

Accepted Answer

The passage describes how scholars impose a moral framework on literary characters, forcing data to fit their theory and drawing unwarranted conclusions, similar to establishing a theory and applying it to ill-fitting data.

Question 16

Most economists in the United States seem captivated by spell of the free market. Consequently, nothing seems good or normal that does not accord with the requirements of the free market. A price that is determined by the seller or for that matter, established by anyone other than the aggregate of consumers seems pernicious, accordingly, it requires a major act of will to think of price - fixing (the determination of prices by the seller) as both "normal" and having a valuable economic function. In fact, price-fixing is normal in all industrialized societies because the industrial system itself provides, as an effortless consequence of its own development, the price-fixing that requires, Modern industrial planning requires and rewards great size. Hence a comparatively small number of large firms will be competing for the same group of consumers. That each large firm will act with consideration of its own needs and thus avoid selling its products for more than its competitors charge is commonly recognized by advocates of free-markets economic theories. But each large firm will also act with full consideration of the needs that it has in common with the other large firms competing for the same customers. Each large firm will thus avoid significant price cutting, because price cutting would be prejudicial to the common interest in a stable demand for products. Most economists do not see price-fixing when it occurs because they expect it to be brought about by a number of explicit agreements among large firms; it is not. More over those economists who argue that allowing the free market to operate without interference is the most efficient method of establishing prices have not considered the economies of non socialist countries other than the United States. These economies employ intentional price-fixing usually in an overt fashion. Formal price fixing by cartel and informal price fixing by agreements covering the members of an industry are common place. Were there something peculiarly efficient about the free market and inefficient about price fixing, the countries that have avoided the first and used the second would have suffered drastically in their economic development. There is no indication that they have. Socialist industry also works within a frame work of controlled prices. In early 1970's, the Soviet Union began to give firms and industries some of the flexibility in adjusting prices that a more informal evolution has accorded the capitalist system. Economists in the United States have hailed the change as a return to the free market. But Soviet firms are no more subject to prices established by free market over which they exercise little influenced than are capitalist firms. In the passage, the author is primarily concerned with
A) predicting the consequences of a practice
B) criticizing a point of view
C) calling attention to recent discoveries
D) proposing a topic for research
E) summarizing conflicting opinions

Accepted Answer

The author is primarily criticizing the point of view held by most economists in the United States who are captivated by the free market and fail to recognize the normalcy and economic function of price-fixing.

Question 17

In strongly territorial birds such as the indigo bunting, song is the main mechanism for securing g, defining, and defending an adequate breeding are. When population density is high, only the strongest males can retain a suitable are. The weakest males do not breed or are forced to nest on poor or marginal territories. During the breeding season, the male indigo bunting sings in his territory; each song lasts two or three seconds with a very short pause between songs, Melodic and rhythmic characteristics are produced by rapid changes in sound frequency and some regularity of silent periods between sounds. These modulated sounds form recognizable units, called figures, each of which is reproduced again and again with remarkable consistency. Despite the large frequency range of these sounds and the rapid frequency changes that the birds makes, the n umber of figures is very limited. Further, although we found some unique figures in different geographical populations, more than 90 percent of all Indigo bunting figures are extremely stable on the geographic basis . In our studies of isolated buntings we found that male indigo buntings are capable of singing many more types of figures than they usually do. Thus, it would seem that they copy their figures from other buntings they hear signing. Realizing that the ability to distinguish the songs of one species from those of another could be an important factor in the volition of the figures, we tested species recognition of a song. When we played a tape recording of a lazuli bunting or a painted bunting, male indigo bunting did not respond; Even when a dummy of male indigo bunting was placed near the tape recorder. Playing an indigo bunting song, however, usually brought an immediate response, making it clear that a male indigo bunting can readily distinguished songs of its own species from those of other species. The role of the songs figures in interspecies recognition was then examined. We created experimental songs composed of new figures by playing a normal song backwards, which changed the detailed forms of the figures without altering frequency ranges or gross temporal features. Since the male indigos gave almost a full response to the backward song, we concluded that a wide range of figures shapes can evoke positive responses. It seems likely, therefore, that a specific configuration is not essential for interspecies recognition, but it is clear that song figures must confirm to a particular frequency range, must be within narrow limits of duration, and must be spaced at particular intervals. There is evident that new figures may arise within a population through a slow process of change and selection. This variety is probably a valuable adaptation for survival: if every bird sang only a few types of figures, in dense woods or underbrush a female might have difficulty recognizing her mate's song and a male might not be able to distinguish a neighbor from a stranger. Our studies led us to conclude that there must be a balance between song stability and conservatism, which lead to clear-cut species recognition, and song variation, which leads to individual recognition. It can be inferred that the investigation that determined the similarly among more than 90 percent of all the figures produced by birds living in different regions was undertaken to response which of the following questions?
A) How much variations, if any, is there in the figure types produced by indigo buntings in different locales? II. Do local populations of indigo buntings develop their own dialects of figure types? III. Do figure similarities among indigo buntings decline with increasing geographic separation?
B) II only
C) III only
D) I and II only
E) II and III only
F) I, II and III

Accepted Answer

The answer of In strongly territorial birds such as the...

Question 18

Recent years have brought minority-owned businesses in the United States unprecedented opportunities-as well as new and significant risks. Civil rights activists have long argued that one of the principal reasons why Blacks, Hispanics and the other minority groups have difficulty establishing themselves in business is that they lack access to the sizable orders and subcontracts that are generated by large companies. Now congress, in apparent agreement, has required by law that businesses awarded federal contracts of more than $500,000 do their best to find minority subcontractors and record their efforts to do so on forms field with the government. Indeed, some federal and local agencies have gone so far as to set specific percentage goals for apportioning parts of public works contracts to minority enterprises. Corporate response appears to have been substantial. According to figures collected in 1977, the total of corporate contracts with minority business rose from $77 to $1. 1 billion in 1977. The projected total of corporate contracts with minority business for the early 1980's is estimated to be over $3 billion per year with no letup anticipated in the next decade. Promising as it is for minority businesses, this increased patronage poses dangers for them, too. First, minority firms risk expanding too fast and overextending themselves financially, since most are small concerns and, unlike large businesses they often need to make substantial investments in new plants, staff, equipment, and the like in order to perform work subcontracted to them. If, thereafter, their subcontracts are for some reason reduced, such firms can face potentially crippling fixed expenses. The world of corporate purchasing can be frustrating for small entrepreneurs who get requests for elaborate formal estimates and bids. Both consume valuable time and resources and a small company's efforts must soon result in orders, or both the morale and the financial health of the business will suffer. A second risk is that White-owned companies may-seek to cash inon the increasing apportionments through formation of joint ventures with minority-owned concerns, of course, in many instances there are legitimate reasons for joint ventures; clearly, white and minority enterprises can team up to acquire business that neither could Third, a minority enterprise that secures the business of one large corporate customer often runs the danger of becoming - and remaining dependent. Even in the best of circumstances, fierce competition from larger, more established companies makes it difficult for small concerns to broaden their customer bases; when such firms have nearly guaranteed orders from a single corporate benefactor, they may truly have to struggle against complacency arising from their current success. The passage most likely appeared in
A) a business magazine
B) an encyclopedia of black history to 1945
C) a dictionary of financial terms
D) a yearbook of business statistics
E) an accounting textbook

Accepted Answer

The passage discusses recent trends and challenges faced by minority-owned businesses, making it suitable for a business magazine.

Question 19

The discoveries of the white dwarf, the neutron star, and the black hole, coming well after the discovery of the red giant are among eh most exciting developments in decades because they may be well present physicists with their greatest challenge since the failure of classical mechanics. In the life cycle of the star, after all of the hydrogen and helium fuel has been burned, the delicate balance between the outer nuclear radiation. Pressure and the stable gravitational force becomes disturbed and slow contraction begins. As compression increases, very dense plasma forms. If the initial star had mass of less than 1.4 solar masses (1.4 times the mass of our sun), the process ceases at the density of 1,000 tons per cubic inch, and the star becomes the white dwarf. However, if the star was originally more massive, the white dwarf plasma can't resist the gravitations pressures, and in rapid collapse, all nuclei of the star are converted to a gas of free neutrons. Gravitational attraction compresses this neutron gas rapidly until a density of 10 tons per cubic inch is reached; at this point the strong nuclear force resists further contraction. If the mass of the star was between 1.4 and a few solar masses, the process stops here, and we have a neutron star. But if the original star was more massive than a few solar masses, even the strong nuclear forces cannot resist the gravitational brunch. The neutrons are forced into one another to form heavier hadrons and these in turn coalesce to form heavier entities, of which we as yet know nothing. At this point, a complete collapse of the stellar mass occurs; existing theories predict a collapse to infinite density and infinitely small dimensions Well before this, however, the surface gravitational force would become so strong that no signal could ever leave the star - any photon emitted would fall back under gravitational attraction - and the star would become black hole in space. This gravitational collapse poses a fundamental challenge to physics. When the most widely accepted theories predict such improbable things as infinite density and infinitely small dimensions, it simply means that we are missing some vital insight. This last happened in physics in the 1930's, when we faced the fundamental paradox concerning atomic structure. At that time, it was recognized that electrons moved in table orbits about nuclei in atoms. However, it was also recognized that if charge is accelerated, as it must be to remain in orbit, it radiates energy; so, theoretically, the electron would be expected eventually to spiral into the nucleus and destroy the atom. Studies centered around this paradox led to the development of quantum mechanics. It may well be that an equivalent t advance awaits us in investigating the theoretical problems presented by the phenomenon of gravitational collapse. According to the passage, in the final stages of its development our own sun is likely to take the form of a
A) white dwarf
B) neutron star
C) red giant
D) gas of free neutrons
E) black hole

Accepted Answer

The passage states that if a star has a mass of less than 1.4 solar masses, it becomes a white dwarf. Since our sun has a mass less than 1.4 solar masses, it is likely to become a white dwarf in its final stages.

Question 20

In strongly territorial birds such as the indigo bunting, song is the main mechanism for securing g, defining, and defending an adequate breeding are. When population density is high, only the strongest males can retain a suitable are. The weakest males do not breed or are forced to nest on poor or marginal territories. During the breeding season, the male indigo bunting sings in his territory; each song lasts two or three seconds with a very short pause between songs, Melodic and rhythmic characteristics are produced by rapid changes in sound frequency and some regularity of silent periods between sounds. These modulated sounds form recognizable units, called figures, each of which is reproduced again and again with remarkable consistency. Despite the large frequency range of these sounds and the rapid frequency changes that the birds makes, the n umber of figures is very limited. Further, although we found some unique figures in different geographical populations, more than 90 percent of all Indigo bunting figures are extremely stable on the geographic basis. In our studies of isolated buntings we found that male indigo buntings are capable of singing many more types of figures than they usually do. Thus, it would seem that they copy their figures from other buntings they hear signing. Realizing that the ability to distinguish the songs of one species from those of another could be an important factor in the volition of the figures, we tested species recognition of a song. When we played a tape recording of a lazuli bunting or a painted bunting, male indigo bunting did not respond; Even when a dummy of male indigo bunting was placed near the tape recorder. Playing an indigo bunting song, however, usually brought an immediate response, making it clear that a male indigo bunting can readily distinguished songs of its own species from those of other species. The role of the songs figures in interspecies recognition was then examined. We created experimental songs composed of new figures by playing a normal song backwards, which changed the detailed forms of the figures without altering frequency ranges or gross temporal features. Since the male indigos gave almost a full response to the backward song, we concluded that a wide range of figures shapes can evoke positive responses. It seems likely, therefore, that a specific configuration is not essential for interspecies recognition, but it is clear that song figures must confirm to a particular frequency range, must be within narrow limits of duration, and must be spaced at particular intervals. There is evident that new figures may arise within a population through a slow process of change and selection. This variety is probably a valuable adaptation for survival: if every bird sang only a few types of figures, in dense woods or underbrush a female might have difficulty recognizing her mate's song and a male might not be able to distinguish a neighbor from a stranger. Our studies led us to conclude that there must be a balance between song stability and conservatism, which lead to clear-cut species recognition, and song variation, which leads to individual recognition. The primary purpose of passage is to
A) raise new issues
B) explain an enigma
C) refute misconceptions
D) reconcile differing theories
E) analyze a phenomenon

Accepted Answer

The passage analyzes the phenomenon of song variation and stability in indigo buntings, exploring how these factors contribute to species and individual recognition.

Exam 2: Test of English as a Foreign Language - Reading Comprehension