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.
    【C1】______, mention of our ever increasing sleeplessness is followed by calls for earlier bedtimes【C2】______a longer night’s sleep. But this directive may be【C3】______of the problem. 【C4】______ helping us to get more rest, the tyranny of the eight-hour block【C5】______ a narrow conception of sleep and how we should 【C6】______ it. Doctors who peddle sleep aid products and call for more sleep may【C7】______ reinforce the idea that there is something wrong about interrupted sleep【C8】______. Sleep anxiety is a common result. Some of the time we spend 【C9】______and turning may even result from 【C10】______about sleep and our bodily needs.
    Thomas A. Wehr, a psychiatrist【C11】______ at the National Institute of Mental Health in Bethesda, Md. , was conducting an experiment in which subjects were deprived of【C12】______ light. Without the illumination and【C13】______ from light bulbs, televisions or computers, the subjects slept【C14】______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【C15】______ back to sleep again.
    It seemed that,【C16】______a chance to be free of modem life, the body would naturally settle into a【C17】______sleep schedule.【C18】______ they broke their conception of what form sleep should【C19】______, they looked forward to the time in the middle of the night as a chance for deep thinking of all kinds,【C20】______in the form of self-reflection or getting a jump on the next day.
【C11】
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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