A、Seven-hour sleepers gained more weight over time than five-hour ones. B、Five-hour sleepers gained more weight over time than s

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问题  
Here’s a dreamy weight-loss plan: take a nap. That’s the message from work by Sanjay Patel at Case Western Reserve University in Cleveland, Ohio. His study of more than 68,000 women has found that those who sleep less than 5 hours a night gain more weight over time than those who sleep 7 hours a night.
    Controlling for other differences between the groups, Patel found that women who slept 5 hours or less gained 0.7 kilograms more on average over 10 years than 7-hour sleepers. The short-sleeping group was also 32 percent more likely to have gained 15 kilograms or more, and 15 percent more likely to have become obese.
    Significantly, the short-sleepers consumed fewer calories than those who slept 7 hours, says Patel, who presented his results this week at the American Thoracic Society International Conference in San Diego, California. This finding overturns the common view that overeating among the sleep-deprived explains such weight differences.
    Lower metabolic rate resulting from less sleep may be the reason behind the weight gain, Patel suggests. "It obviously also suggests that getting people to sleep more might be a relatively easy way to help people lose weight," he says.
21. What did Patel’s study indicate?
22. How many subjects did Patel have in his study?
23. According to Patel’s study, which of the following is not true?
24. According to Patel, what might be the reason behind the weight differences?
25. What suggestion will Patel give to those who want to lose weight?

选项 A、Seven-hour sleepers gained more weight over time than five-hour ones.
B、Five-hour sleepers gained more weight over time than seven-hour ones.
C、Short-sleepers were 15% more likely to become obese.
D、Short-sleepers consumed fewer calories than long sleepers.

答案A

解析 细节题。题意是:“根据Patel的研究,以下哪一项是错误的?”短文谈到:those who sleep less than 5 hours a night gain more weight over time than those who sleep 7 hours a night.“晚上睡眠时间少于5小时的人比睡7小时的人更容易增加体重。”而A选项恰与之意思相反,故A为答案。
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