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  3. If you start each day desperately wishing for an extra hour in bed, the following is likely to leave you feeling even more bad-t

If you start each day desperately wishing for an extra hour in bed, the following is likely to leave you feeling even more bad-t

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问题     If you start each day desperately wishing for an extra hour in bed, the following is likely to leave you feeling even more bad-tempered. Scientists have identified a "sleepless elite" —a small group of people for whom staying in bed longer is a waste of time.
    Rather than being tired and bad-tempered losers, they are an energetic, outgoing and optimistic group who can happily and healthily get bu on just four or five hours of sleep a night. And, they tend to bu slim, able to hold down two jobs at the same time, and handle their extra-long days easily without needing coffee or catnaps(小睡).
    Working out how the gene(基因)cuts sleep without any obvious impact on health could help in the design of drugs that give us all a few extra hours in our day. The bad news is that while many of us get bu on a few hours’ sleep a night, just one to three people in 100 qualify to be part of the sleepless elite.
    The research team is now calling for members of the lucky group to come forward to allow their DNA to be studied. Harvard University researcher Dr. Christopher Jones said: "My long-term goal is to someday learn enough so we can control the sleep mechanism without damaging our health. Everyboby can use more waking hours, even if you just watch movies. "
    Many of those who have already volunteered share fascinating characteristics. They are cheerful, thinner than average, and seem to have a high tolerance for physical pain and psychological setbacks.
    Dr. Christopher Jones told the New York Times: "Typically, at the end of a long phone interview, they will admit they have been sending short text messages and surfing the Internet and word games at the same time, all on less than six hours of sleep. "
The phrase "come forward"(para. 4)is closest in meaning to______.
选项 A、volunteer
B、donate
C、contribute
D、decide
答案A
解析
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