You bring in a sample of crack cocaine to use as a visual aid on a speech about drugs. This is a good visual aid for a classroom speech.
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Q27: Demonstrations and lectures are the same type
Q28: "According to Dr. William Glasser . .
Q29: "According to Newsweek magazine . . ."
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Q33: You should never use a live animal
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Q35: Handouts should be avoided when giving a
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Q37: Speakers should never write on the board
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