题目内容：

Medical experts （专家）say most Americans do not get enough sleep．They say more Americans need to take a nap（小睡）-that is to rest for a short time in the middle of the day．They give people advice to sleep lightly before continuing with other activities．The experts say naps might improve health by reducing pressure（压力）．

Some European and Latin American companies have supported （支持）the idea of napping for many years．They ask people to leave work，go home and have a nap before returning．In the United States，some companies let workers rest simply （简单地）in their offices．They believe this can help workers make fewer mistakes and also increase （增加） the amount of work that a person can do．

Sleep experts say it is possible that people make more mistakes at work than at other times．They say people should not do important tasks when they feel sleepy．And they say the best thing to do is to take a nap．About twenty minutes of rest is all you need．Experts say this provides extra energy （额外的精力）and can increase your effects until the end of the day．But experts said that a nap should last  only twenty to thirty minutes.A longer nap will put the body into deep sleep and waking up will be difficult．

1.What will happen to the workers if they keep on working without any rest?

A. They will get a lot or money

B. They will fail in their jobs and even cause a lot of trouble

C. They will live a happy life in the future

D. They will feel better after finishing every life

2.What is the best way to increase workers' effects？

A. Talking with friends．

B. Doing relaxing exercises．

C. Laughing，smiling and crying．

D. Having a rest for twenty or thirty minutes．

3.The meaning of the underlined word “reducing”in the first paragraph is“     ”in Chinese.

A. 加大    B. 缓解    C. 产生    D. 制造

4.The passage mainly talks about     .

A. taking a nap during the day

B. the disadvantages （不利）of taking a nap

C. Americans who don't have a nap during the weekends

D. the advantages（好处）of deep sleep

5.You can see this passage from     .

A. a story book    B. a poster

C. a science fiction（科幻小说）    D. a medical magazine