A. Keprike’s research tool B. Dangers of habitual shortages of sleep C. Criticism on Kripke’s report D. A way of overcoming inso

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问题 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 sleepersF. Classification of sleep problems
A. fall asleep again
B. become more energetic the following day
C. sleep less than 7 hours
D. confirm those serious consequences
E. suffer sleep problems
F. sleep more than 8 hours

选项

答案F

解析 根据搭配结构“need to do sth.”判断所有选项都在语法上合适。借助搭配句意:“为了获得晚上好的休息,人们没有必要……”判断F是答案“睡眠超过8小时”。
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