1．It is common to have difficulties sleeping during the day．Humans are naturally wired to sleep best at night and be awake during the day．However，modern work schedules require some people to try to accommodate the unnatural schedule of shift（輪班）work-being awake at night and sleeping during the day．
In order to make this adjustment，you need to pay special attention to your sleep environment and your preparation for sleep．If shift work is a necessary part of your work life，here are some suggestions that may help．
Arrange to sleep uninterrupted in a quiet，dark room．This means you may have to turn off or unplug your phone，hang darkening curtains on the windows or wear a sleep eye mask，and train your family and friends to leave you alone while you sleep．
Fit in a nap（小睡）．When your daytime sleep period is too short，taking a short nap of less than 30 minutes just before work or on a break has been shown to improve alertness and enhance performance．
Develop and follow a sleep routine．It's best if you go to sleep and wake up at the same time every day．Try not to vary this too much on weekends．Your body likes routine．
Take extra care to make healthy choices．You may be tempted to reach for unhealthy foods or nicotine to stay awake or alcohol to try to sleep．But ultimately these choices are more harmful than helpful．
If you have tried all these things and are still having problems getting enough quality sleep during the day，talk to your doctor or a sleep specialist．Sometimes medications（藥物治療）may be helpful and safe．In other cases，there may be an underlying sleep disorder that needs to be addressed．
72．The purpose of the text is toD．
A．persuade workers to have a god sleep．
B．a(chǎn)dvise night workers to keep healthy
C．encourage workers to do day work
D．help night workers to sleep well
73．What does the author recomusend？B
A．A suitable account of alcohol to help sleep．
B．A regular life on weekday's and weekends．
C．A dark room without phoebes to sleep in．
D．A break for sleeping anytime during the day．
74．On which condition should a person turn to a sleep specialist for help？C
A．If he suffers from a sleep disorder for the first time．
B．If a good sleep environment is greatly needed for him．
C．If he falls to get quality sleep through his own efforts．
D．If he has the problem of bailing to sleep in the daytime．
75．We can learn from the test thatD．
A．night workers need a long time to fall asleep
B．constant breaks at work help to improve performance
C．it is difficult to create a good sleep environment
D．night work requires people to adjust their body clocks．

分析 本文屬于說明文閱讀，作者通過這篇文章主要向我們描述了一些夜班工人如何安排好自己睡眠的建議．

解答 72．D．主旨大意題．根據(jù)第二段的here are some suggestions that may help．可知作者提供了一些夜班工人如何安排好自己睡眠的建議，故選D．
73．B．細(xì)節(jié)題：根據(jù)文章的第五段的Try not to vary this too much on weekends．可知此題答案選B．
74．C．細(xì)節(jié)題：根據(jù)文章最后一段的If you have tried all these things and are still having problems getting enough quality sleep during the day talk to your doctor or a sleep specialist．可知如果他通過自己的努力獲得優(yōu)質(zhì)睡眠失敗了應(yīng)該求助睡眠專家；故選C．
75．D．推理題：根據(jù)文章內(nèi)容可知人的睡眠是有固定規(guī)律的，人們是白天工作而鐘上睡覺，而對于晚上工作的人就需要調(diào)整自己的生物鐘．故選D．

點(diǎn)評 文章分析了具體的現(xiàn)象．測試考生在閱讀基礎(chǔ)上的邏輯推理能力，要求考生根據(jù)文章所述事件的邏輯關(guān)系，對未說明的趨勢或結(jié)局作出合理的推斷；或根據(jù)作者所闡述的觀點(diǎn)理論，對文章未涉及的現(xiàn)象、事例給以解釋．考生首先要仔細(xì)閱讀短文，完整了解信息，準(zhǔn)確把握作者觀點(diǎn)．

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