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.
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
2.解析为该段中只包含两个句子，而每个句子中提到了have trouble falling asleep“很难入睡”，这表明该段主题应与睡眠问题相关。选项E和选项F都直接提到了sleep problems“睡眠问题”，因此推测答案可能来自这两个选项之中。选项E意为“睡眠时间长的人和睡眠时间短的人遇到的睡眠问题”，选项F意为“睡眠问题的分类”。结合段落内容来看，第一句主要提到 people who clock up 9 or 10 hours each weeknight”每晚睡9—10个小时的人"，即睡眠时间长的人的情况，段落第二句主要提到People who slept only 7 hours each night “每晚只睡7个小时的人”，即睡眠时间短的人的情况。
3.解析为第三段主要讲了 Daniel Kripke在Psychosomatic Medicine(杂志名)上报道的一些发现。A项是说Kripke的研究，这与report的含义不同，所以不可误选。C选项的内容与本段符合，包含了关键词report和journal。
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
6.解析为利用题干中的名词短语a good night’s rest和名词people作为定位线索，在文章中找到相关句 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.依据该句可直接判断F“睡眠超过8小时”是答案。
7.解析为利用题干中的名词短语long sleepers作为定位线索，同时关注题干中的其他用词，这样在文章中找到相关句 Investigators at the University of California in San Diego found that people who clock up 9 or 10 hours each weeknight (与long sleepers呼应)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。依据该句可直接判断E“出现睡眠问题”是答案。
8.解析为利用题干中的名词短语one of the sleep problems, the middle of the night作为定位线索，在文章中找到相关句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的近义结构。
9.解析为利用题干中的名词结构one survey, higher risk of dying作为定位线索，在文章中找到相关句one report (与survey呼应)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,依据该句可直接判断C“睡眠不足7个小时”是答案。
10.解析为利用题干中的insomnia(失眠)作为定位线索，可以发现最后一段的倒数第二句涉及到了这个名词。在文中找到相关的句子 As evidence , he added that one way to help insomnia is to spend less time in bed,因此可以很容易发现D项的内容可以完成这个句子。