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　　Unit 9 Facing Life´s Challenges

　　More Than 8 Hours Sleep Too Much of a Good Thing

　　Although the dangers of too little sleep are widely known, new research suggests that people who sleep too much may also suffer the consequences.

　　Investigators at the University of California in San Diego found that people who clock up 9 or 10 hours each weeknight appear to have more trouble falling and staying a sleep,as well as a number of other sleep problems,than people who sleep 8 hours a night. People who slept only 7 hours each night also said they had more trouble falling asleep and feeling refreshed after a night’s sleep than 8-hour sleepers.

　　These findings, which DL Daniel Kripke reported in the journal Psychosomatic Medi​cine ,demonstrate that people who want to get a good night"s rest may not need, to set aside more than 8 hours a night. He added that "it might be a good idea" for people who sleep more than 8 hours each night to consider reducing the amount of time they spend in bed,but cau​tioned that more research is needed to confirm this.

　　Previous studies have shown the potential dangers of chronic shortages of sleep一for in​stance, one report demonstrated that people who habitually sleep less than 7 hours each night have a higher risk of dying within a fixed period than people who sleep more.

　　For the current report, Kripke reviewed the responses of 1,004 adults to sleep question ​naires ,in which participants indicated how much they slept during the week and whether they experienced any sleep problems. Sleep problems included waking in the middle of the night ,arising early in the morning and being unable to fall back to sleep,and having fatigue interfere with day-to-day functioning.

　　段落對應小標題

　　1.Paragraph1_____.

　　2.Paragraph2_____.

　　3.Paragraph3_____.

　　4.Paragraph4_____.

　　5Paragraph5_____.

　　A.Kripke’s research

　　B.Dangers of Habitual shortages of sleep

　　C.Kripke’s report in the journal

　　D.the dangers of less or more sleep

　　E.Sleep problems of long and short sleepers

　　F.Classification of sleep problems

　　參考答案：

　　1.解析為這一段只包含一句話，主要講了少量睡眠和過多的睡眠都會導致危險。因此本段的主旨為danger，B項意為習慣性睡眠缺失的危害，本段未涉及。D項的含義與本題相符。

　　答案為D

　　2.解析為該段中只包含兩個句子，而每個句子中提到了have trouble falling asleep“很難入睡”，這表明該段主題應與睡眠問題相關。選項E和選項F都直接提到了sleep problems“睡眠問題”，因此推測答案可能來自這兩個選項之中。選項E意為“睡眠時間長的人和睡眠時間短的人遇到的睡眠問題”，選項F意為“睡眠問題的分類”。結合段落內容來看，第一句主要提到 people who clock up 9 or 10 hours each weeknight”每晚睡9—10個小時的人"，即睡眠時間長的人的情況，段落第二句主要提到People who slept only 7 hours each night “每晚只睡7個小時的人”，即睡眠時間短的人的情況。

　　答案為E

　　3.解析為第三段主要講了 Daniel Kripke在Psychosomatic Medicine(雜志名)上報道的一些發(fā)現。A項是說Kripke的研究，這與report的含義不同，所以不可誤選。C選項的內容與本段符合，包含了關鍵詞report和journal。

　　答案為C

　　4.解析為整個段落只包含一個句子，該句主要提到了以前的研究發(fā)現揭示了慢性睡眠不足的潛在危險。這與選項B“習慣性睡眠不足的危險”呼應一致。

　　答案為B

　　5.解析為對于該段主題的判斷具有一定的迷惑性，A和F容易相互成為干擾項，但由于段落中提到的“睡眠問題”是屬于問卷上要回答的內容，是和Kripke的直接研究有關，所以判斷“Kripke的研究”是段落的主題，因此A是答案。

　　答案為A。

　　給下列五道題選擇相應正確的選項。

　　6.To get a good night"s rest,people may not need to_____.

　　7.Long sleepers are reported to be more likely to_______.

　　8.One of the sleep problems is waking in the middle of the night, unable to_______.

　　9.One survey showed that people who habitually_______each night have a higher risk of dying.

　　10.One way to solve the problem of insomnia is to______.

　　A.fall asleep again

　　B.become more energetic the following day

　　C.sleep less than 7 hours

　　D.spend less time in bed

　　E.suffer sleep problems

　　F.sleep more than 8 hours

　　參考答案：

　　6.解析為利用題干中的名詞短語a good night’s rest和名詞people作為定位線索，在文章中找到相關句 These findings,which DL Daniel Kripke reported in the journal Psychosomatic Medicine, demonstrate that people who want to get a good night’s rest may not need to set aside more than 8 hours a night.依據該句可直接判斷F“睡眠超過8小時”是答案。

　　答案為F

　　7.解析為利用題干中的名詞短語long sleepers作為定位線索，同時關注題干中的其他用詞，這樣在文章中找到相關句 Investigators at the University of California in San Diego found that people who clock up 9 or 10 hours each weeknight (與long sleepers呼應)appear to have more trouble falling and staying asleep,as well as a number of other sleep problems, than people who sleep 8 hours a night。依據該句可直接判斷E“出現睡眠問題”是答案。

　　答案為E

　　8.解析為利用題干中的名詞短語one of the sleep problems, the middle of the night作為定位線索，在文章中找到相關句Sleep problems included waking in the middle of the night, arising early in the morning and being unable to fall back to sleep,and having fatigue interfere with day- to-day functioning, fall asleep again“再次入睡”是 fall back to sleep的近義結構。

　　答案為 A

　　9.解析為利用題干中的名詞結構one survey, higher risk of dying作為定位線索，在文章中找到相關句one report (與survey呼應)demonstrated that people who habitually sleep less than 7 hours each night have a higher risk of dying within a fixed period than people who sleep more,依據該句可直接判斷C“睡眠不足7個小時”是答案。

　　答案為C。

　　10.解析為利用題干中的insomnia(失眠)作為定位線索，可以發(fā)現最后一段的倒數第二句涉及到了這個名詞。在文中找到相關的句子 As evidence , he added that one way to help insomnia is to spend less time in bed,因此可以很容易發(fā)現D項的內容可以完成這個句子。

　　答案為D。

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