Paragraph 6 __________

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 sleepers

F．Classification of sleep problems

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参考答案

段落中出现的Kripke found，Kripke noted和he added表明Kripke的观点和态度应该是该段的中心，对比被选项排除C(段落中没有出现批评的话语)和F(段落中没有具体提到睡眠问题的表现形式)，而段落最后第2句提到了克服失眠的方法——少躺在床上，与D呼应。

1 To get a good night's rest, people may not need to __________.

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

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2 Long sleepers are reported to be more likely to __________.

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

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3 One of the sleep problems is waking in the middle of the night, unable to__________.

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

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