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

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