2. 外语
  3. Thanks in part to technology and its constant sounding and ringing, roughly 41 million people in the United States—nearly a thir

Thanks in part to technology and its constant sounding and ringing, roughly 41 million people in the United States—nearly a thir

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问题     Thanks in part to technology and its constant sounding and ringing, roughly 41 million people in the United States—nearly a third of all working adults—get six hours or fewer of sleep a night, according to a recent report.
     (1)______, mention of our ever increasing sleeplessness is followed by calls for earlier bedtimes (2)______a longer night’s sleep. But this directive may be(3) ______ of the problem.(4)______helping us to get more rest, the tyranny of the eight-hour block (5)______a narrow conception of sleep and how we should(6) ______ it. Doctors who peddle sleep aid products and call for more sleep may(7)______reinforce the idea that there is something wrong about interrupted sleep(8)______. Sleep anxiety is a common result. Some of the time we spend(9) ______and turning may even result from(10)______about sleep and our bodily needs.
    Thomas A. Wehr, a psychiatrist(11)______ at the National Institute of Mental Health in Bethes-da, Md. , was conducting an experiment in which subjects were deprived of(12)______light. Without the illumination and(13)______from light bulbs, televisions or computers, the subjects slept(14)______the night, at least at first. But, after a while, Dr. Wehr noticed that subjects began to wake up a little after midnight, lie awake for a couple of hours, and then(15)______back to sleep again.
    It seemed that,(16)______a chance to be free of modern life, the body would naturally settle into a (17)______ sleep schedule. (18)______they broke their conception of what form sleep should (19)______, they looked forward to the time in the middle of the night as a chance for deep thinking of all kinds,(20)______in the form of self-reflection or getting a jump on the next day.
(11)
选项 A、then worked
B、now working
C、then working
D、who working
答案C
解析 非谓语动词题。本句的谓语动词是was conducting，而working是现在分词作后置定语，修饰a psychiatrist，并且时间上是过去，不是现在，因此用then，不可用now，由此可确定[C]为正确答案。同时可排除[B]和[D]；[A]then worked不能作定语，故也排除。
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