2. 外语
  3. It is commonly accepted in American society that too much sleep is ______. The research done by the Dement commission shows tha

It is commonly accepted in American society that too much sleep is ______. The research done by the Dement commission shows tha

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问题 It is commonly accepted in American society that too much sleep is ______.
The research done by the Dement commission shows that Americans ______.
选项 A、don’t like to take naps
B、are terribly worried about their national debt
C、sleep less than is good for them
D、have caused many industrial and traffic accidents
答案C
解析 Dement研究组所做研究的相关结果出现在第三段 ... identified an "American sleep debt"... about the dangers of sleepiness: People causing industrial accidents or falling asleep while driving．……表明，美国人睡少了，而对他们不利。C与之吻合，正确。
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