单项选择题

Passage One
Questions 26 to 29 are based on the passage you have just heard.

A. To make them longer. B. To avoid accidents.
C. To save materials. D. To improve techniques.
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单项选择题
A. The drug made them lose the ability to work. B. The drug made it easier for people to think rationally. C. The drug made people worry more about the future. D. The drug enabled people to forget all their problems.
A. The drug made them lose the ability to work.
B. The drug made it easier for people to think rationally.
C. The drug made people worry more about the future.
D. The drug enabled people to forget all their problems.
单项选择题
C
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