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.
【C17】
选项 A、aimed
B、targeted
C、designated
D、designed
答案B
解析 本题考查动词辨析。空格处填入的动词的过去分词形式与to搭配作句子的状语，其中some是所填分词的逻辑主语，它指代前面的sleep-related research，逻辑宾语是specific disorders。target(以……为目标)放入原文，表达的含义为“一些与睡眠相关的研究以特定的(睡眠)紊乱为目标”。故为正确答案。aim(at)“瞄准，以……为目标”不与to搭配；designate“指派，选定”，与逻辑主语不搭配；design“计划，设计”，与宾语不搭配，它的常见用法是be designed to do sth．。
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