2. 考研
  3. Chronic insomnia is a major public health problem. And too many people are using【C1】______therapies, even while there are a few

Chronic insomnia is a major public health problem. And too many people are using【C1】______therapies, even while there are a few

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问题    Chronic insomnia is a major public health problem. And too many people are using【C1】______therapies, even while there are a few treatments that do work. Millions of Americans【C2】______awake at night counting sheep or have a stiff drink or【C3】______a pill, hoping it will make them sleepy.【C4】______experts agree all that self-medicating is a bad idea, and the causes of chronic insomnia remain【C5】______.
   Almost a third of adults have trouble sleeping, and about 10 percent have【C6】______of daytime impairment that signal true insomnia. But【C7】______the complaints, scientists know surprisingly little about what causes chronic insomnia, its health consequences and how best to treat it, a panel of specialists were【C8】______together by the National Institutes of Health concluded Wednesday. The panel called【C9】______a broad range of research into insomnia, 【C10】______that if scientists understood its【C11】______causes, they could develop better treatments.
   Most, but not all, insomnia is thought to【C12】______other health problems, from arthritis and depression to cardiovascular disease. The question often is whether the insomnia came first or was a result of the other diseases and how trouble sleeping in【C13】______complicates those other problems. Other diseases【C14】______, the risk of insomnia seems to increase with age and to be more【C15】______among women, especially after their 50s. Smoking, caffeine and numerous【C16】______drugs also affect sleep.
   The NIH is spending about $200 million this year on sleep-related research, some【C17】______to specific disorders and others【C18】______the underlying scientific laws that control the nervous system of sleep. The agency was【C19】______the panel’ s review before deciding what additional work should be【C20】______at insomnia.
【C13】
选项 A、short
B、case
C、essence
D、turn
答案D
解析 本题考查上下文语义。空格处填入的词与in搭配，在句中作状语。四个备选项均能与in搭配，关键是看填入后哪个更符合文意。原句大意是：问题是不知道是失眠症与其他疾病谁是因谁是果，以及失眠如何______使其他问题变得更加复杂。从逻辑语义看，D项符合文意，因为in turn(转而，反过来)，它可以表示一种连锁的因果关系。in short(简而言之，总而言之)；in case(假使，如果，万一)；in essence(本质上)，均不合文意，故被排除。
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