职称英语理工类题型习题：概括大意(2)
文章作者 100test 发表时间 2008:06:21 10:38:16
来源 100Test.Com百考试题网
Passage 2 (难度A/B)
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 co
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