单项选择题

Questions 29 to 31 are based on the passage you have just heard.

A. Sleeping pills made people go into REM sleep quickly.
B. People had more dreams after they took sleeping pills.
C. People became angry easily because they didn’t take sleeping pills.
D. Sleeping pills prevented people from going into REM sleep.
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单项选择题
A. Watch traffic. B. Obey commands. C. Cross streets safely. D. Guard the door.
A. Watch traffic.
B. Obey commands.
C. Cross streets safely.
D. Guard the door.
单项选择题
A. Her car is being repaired. B. She wants to help reduce pollution. C. Parking is difficult in the city. D. The cost of fuel has increased.
A. Her car is being repaired.
B. She wants to help reduce pollution.
C. Parking is difficult in the city.
D. The cost of fuel has increased.
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