American presidents seem to age before our eyes. But the common belief that high-office stress grays our leaders faster than【C1】

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问题     American presidents seem to age before our eyes. But the common belief that high-office stress grays our leaders faster than【C1】______may be a myth, new research finds. In fact, the majority of American presidents have lived longer than【C2】______men of their times.
    That’s not to【C3】______that chronic stress has no effect on a person’s lifespan, but【C4】______does high social standing. The findings【C5】______a body of research linking high status to better health:【C6】______, Oscar winners live longer than those who were only【C7】______; and the long life effect is also seen in Nobel Prize winners.
    The new study, which was published in the Journal of the American Medical Association,【C8】______the dates of birth, inauguration and death of all 34 past presidents who died of natural causes. The【C9】______lifespan for these men should have been 68 years,【C10】______they’d aged twice as fast during their years in【C11】______as the popular wisdom suggests they do.
   【C12】______, the study found, these presidents lived an average 73 years. And indeed, 23 of the 34 presidents who died of natural causes lived longer than【C13】______, compared with other men their age during their lifetimes.
    Some presidents【C14】______an exceptionally long time: Gerald Ford died at 93.5 years, AND Ronald Reagan at 93.3. All【C15】______living presidents have already exceeded their life【C16】______, or are likely to do so.
    So why do people【C17】______the top of the hierarchy fare better than those below?【C18】______to wealth, education and the best health care of their times would seem to be obvious factors【C19】______medical attention seems to have actually killed President Garfield, who died from a fatal【C20】______introduced by his doctors’ unclean treatment techniques after he was shot by an assassin.
【C5】

选项 A、adjust to
B、point to
C、devote to
D、add to

答案D

解析 上下文语义题。此处应填入谓语动词,连接前后的主语和宾语。主语The findings指的是第一段提及的new research的研究结果,根据分号后所提到的奥斯卡奖和诺贝尔奖得主可知,a body of research是之前已经进行的研究,由此推断,新研究应该补充强化了之前的研究,D项add to作“补充”讲时,表示“这些发现是对身处高位与更好的健康状况之间的联系所进行的大量研究的补充”,符合句意。
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