1995 年全国硕士研究生入学统一考试英语试题
Section ⅠUse of English
Sleep is divided into periods of so-called REM sleep, characterized by rapid eye movements and dreaming, and longer
periods of non-REM sleep. 1 kind of sleep is at all well-understood, but REM sleep is 2 to serve some
restorative function of the brain. The purpose of non-REM sleep is even more 3 . The new experiments, such as these
4 for the first time at a recent meeting of the Society for Sleep Resea ...


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