2. If you don’t sleep seven to eight hours at night very often, _______.
A. you will tend to have longer periods of REM
B. your strong memories might be ruined
C. you will have an adequate REM sleep
D. your mind can form strong memories
答案解析:答案为B。本题为细节题。结合上题的分析可知,如果睡眠少于七到八个小时,记忆力会受到伤害。故答案为B。
3. The third paragragh is mainly about _______ of the most recent study.
A. the process
B. the results
C. the participants
D. the content
答案解析:答案为A。通读第三段可知,本段是关于研究的过程。故答案为A。
4. What is the author’s purpose in writing the passage?
A. To explain the imortance of REM sleep to one’s memories
B. To persuade readers to sleep seven to eight hours at night.
C. To discuss the relationship between sleep and memories
D. To introduce the new study on sleep and memories
答案解析:答案为D。本题考查作者的写作目的。本文第一段引入了REM 睡眠对人的记忆力的影响,第二段对其进行了具体介绍,第三段介绍了研究的过程,最后一段对REM 睡眠作出了进一步的解释,故答案为D,介绍一项睡眠和记忆的新研究。
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