In 1958, the magazine Popular Science predicted that the "age-old dream of flying like a bird may be closer than we think." How was this supposed to come to pass? The magazine predicted that people would be flying around with the greatest of ease using rocket-powered jetpacks. Indeed, such means of locomotion exist today. But there are many hurdles to pass before they become widely used. They are literally rockets, so they make a terrible racket-up to 130 decibels, which is actually louder than a 747 at takeoff. They're heavy, too. At eighty-five pounds, they're far too heavy for use by the majority of the population today. Finally, they're extremely costly. Entry-level jetpacks go for around a quarter of million dollars. And prices soar upwards from there. So while personal jetpacks are a great idea in theory, reality will prevent them from becoming a viable source of transportation anytime soon.
Which of the following key ideas is true according to the passage?

Question

Quizplus · Accepted Answer

In 1958, the magazine Popular Science predicted that the "age-old dream of flying like a bird may be closer than we think."
"In 1958, the magazine Popular Science predicted that the 'age-old dream of flying like a bird may be closer than we think,'" is incorrect. This is just an introductory sentence to capture the reader's attention. It does not support that author's main idea that jetpack travel is currently impractical. 
"The magazine predicted that people would be flying around with the greatest of ease using rocket-powered jetpacks," is incorrect. This sentence supports Popular Science's 1958 prediction. It does not support that author's main idea that jetpack travel is currently impractical. 
"Indeed, such means of locomotion exist today," is incorrect. This sentence does not support that author's main idea that jetpack travel is currently impractical.

In 1958, the Magazine Popular Science Predicted That the "Age-Old