试题答案与详细解析
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概括大意

1、 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 asleep，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 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.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 cautioned that more research is needed to confirm this.　　Previous studies have shown the potential dangers of chronic shortages of sleep一for instance, 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 questionnaires，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.　　KriDke found that people who slept between 9 and 10 hours each night were more likely to report experiencing each sleep problem than people who slept 8 hours.In an interview, Kripke noted that long sleepers may struggle to get rest at night simply because they spend too much time in bed.As evidence，he added that one way to help insomnia is to spend less time in bed.“It stands to reason that if a person spends too long a time in bed, then they’ll spend a higher percentage of time awake.”he said.

参考答案： 　　1. E： Investigators ...found that people who clock up 9 or 10 hours each weeknight appear to have more trouble falling, than...该句回应了文章的主题—睡眠时间太长不是好事;对应被选项发现只有E和F与这个内容有关系，但段落最后一句中又提到了睡眠不足的人的问题，因此判断E是答案(睡眠长和睡眠短的人所面临的睡眠问题)。　　2. B.分析：段落的结构-- Previous studies have shown the potential dangers of chronic shortages of sleep一for instance..表明了该段的中心是讲述“长期睡眠不足的潜在危险”　　3. A. 分析：对于该段落答案的选择具有一定的迷惑性，A和F容易相互成为干扰项，但由于段落中提到的“睡眠问题”是属于问卷上要回答的内容，是和Keprike的直接研究有关，所以判断A是答案，同时推测F可能是干扰项。　　4. D： 段落中出现的Kripke found， Kripke noted和he added表明“Kripke的观点和态度应该是该段的中心”，对比被选项排除C(段落中没有出现批评的话语)和F(段落中没有具体提到睡眠问题的表现形式)，而段落最后第2句提到了克服失眠的方法 ——少花时间在床上，与D呼应。    

答案解析：
　　1. E： Investigators ...found that people who clock up 9 or 10 hours each weeknight appear to have more trouble falling, than...该句回应了文章的主题—睡眠时间太长不是好事;对应被选项发现只有E和F与这个内容有关系，但段落最后一句中又提到了睡眠不足的人的问题，因此判断E是答案(睡眠长和睡眠短的人所面临的睡眠问题)。　　2. B.分析：段落的结构-- Previous studies have shown the potential dangers of chronic shortages of sleep一for instance..表明了该段的中心是讲述“长期睡眠不足的潜在危险”　　3. A. 分析：对于该段落答案的选择具有一定的迷惑性，A和F容易相互成为干扰项，但由于段落中提到的“睡眠问题”是属于问卷上要回答的内容，是和Keprike的直接研究有关，所以判断A是答案，同时推测F可能是干扰项。　　4. D： 段落中出现的Kripke found， Kripke noted和he added表明“Kripke的观点和态度应该是该段的中心”，对比被选项排除C(段落中没有出现批评的话语)和F(段落中没有具体提到睡眠问题的表现形式)，而段落最后第2句提到了克服失眠的方法 ——少花时间在床上，与D呼应。

1 　1. Paragraph 2 ___.　　2. Paragraph 4___.　　3. Paragraph 5___.　　4. Paragraph 6___.    A. Keprike’s research tool　　B. Dangers of Habitual shortages of sleep　　C. Criticism on Kripke’s report　　D. A way of overcoming insomnia　　E. Sleep problems of long and short sleepers　　F. Classification of sleep problems