You need a Nap

　　Medical experts say most Americans do not get ____51____ sleep. They say more Americans need to rest for a short period in the middle of the day. They are advising people to sleep lightly before ____52____ with other activities.

　　One study earlier this year found that persons who sleep for a few minutes during the day were less ____53____ to die of disease. The study followed more than 2，300 Greek adults ____54____ about six years. Adult who rested for half an hour ____55____ three times a week had a 37 percent lower risk of dying from heart disease than those who did not nap.

　　Study organizers said the ____56____ evidence was in working men. They said naps might improve health by mitigating tension caused by work.

　　Some European and Latin American businesses have supported the ____57____ of napping for many years. They urge people to ____58____ work， go home and have a nap before returning. In the United States， some companies let workers rest briefly in their offices. They believe this reduces in their offices. They believe this reduces ____59____ and accidents， and also ____60____ the amount of work a person can do.

　　Sleep experts say it is likely that people make more mistakes at work than at other times. They say people should not carry ____61____ important duties when they feel sleepy. And they say the best thing to do is to take a nap. About twenty minutes of rest is ____62____ you need. Experts say this provides extra energy and can increase your effectiveness ____63____ the end of the day. But experts warn that a nap ____64____ last no more than twenty to thirty minutes. A longer nap will put the body into deep sleep and waking up will be ____65____.

　　51 A sweet B sound C sufficient D less

　　52 A checking B sharing C continuing D meeting

　　53 A lovely B likely C fondly D finely

　　54 A for B at C in D with

　　55 A atleast B atmost C atlast D atfirst

　　56 A strongest B biggest C clearest D powerless

　　57 A experiment B reform C idea D way

　　58 A change B improve C repeat D leave

　　59 A work B mistake C energy D time

　　60 A increase B decrease C improve D low

　　61 A about B ou C off D away

　　62 A all B few C any D nothing

　　63 A unless B while C until D during

　　64 A may B would C should D might

　　65 A helpful B easy C difficult D happy

　　1

　　【正確答案】 C

　　2

　　【正確答案】 C

　　3

　　【正確答案】 B

　　4

　　【正確答案】 A

　　5

　　【正確答案】 A

　　6

　　【正確答案】 A

　　7

　　【正確答案】 C

　　8

　　【正確答案】 D

　　9

　　【正確答案】 B

　　10

　　【正確答案】 A

　　11

　　【正確答案】 B

　　12

　　【正確答案】 A

　　13

　　【正確答案】 C

　　14

　　【正確答案】 C

　　15

　　【正確答案】 C

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