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  3. Branding an age category might sound like a frivolous exercise. But life stages are primarily social constructs, and history sho

Branding an age category might sound like a frivolous exercise. But life stages are primarily social constructs, and history sho

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问题     Branding an age category might sound like a frivolous exercise. But life stages are primarily social constructs, and history shows that their emergence can 【C1】______ deep changes in attitudes. Such change is needed 【C2】______ the questions that swirl around rising longevity are to get a 【C3】______ answer.
    Before 1800 no country in the world had an average life 【C4】______ at birth beyond 40. Today there is not a country that does not. 【C5】______ 1900, more years have been 【C6】______ human life than in the rest of history combined, 【C7】______ by reducing child mortality and lately by 【C8】______ lifespans. Longevity is one of humanity’s great 【C9】______.
    【C10】______ it is seen as one of society’s great headaches. The problem 【C11】______ the increasing dependency of the old on the young. By 2100, the ratio of 65-plussers to "working-age" people will triple. 【C12】______ the world greys, growth, tax revenues and workforces will 【C13】______ while spending on pensions and health care will increase. So, 【C14】______, goes the orthodoxy.
    Doom-mongers tend to miss a bigger point, however. Those extra years of life are 【C15】______ healthy ones. Five of the additional six years that a British boy born in 2015 can expect to live, 【C16】______ one born in 1990, will be healthy, according to the Institute for Health Metrics and Evaluation, at the University of Washington. Too many governments and firms fail to 【C17】______this fact, instead lumping all the extra years in the damning category of 65 and over. This binary way of thinking, seeing retirement as a cliff edge 【C18】______ which workers and consumers suddenly tumble, 【C19】______ little relation to the real world. It also encourages unimaginative policy, 【C20】______ the retirement age is occasionally moved as lifespans lengthen.
【C13】
选项 A、decline
B、grow
C、dislocate
D、rearrange
答案A
解析 语义辨析题。根据常识我们可推断，随着世界老龄化程度的加剧，经济增长、税收收入以及劳动力都会出现衰退。四个选项中只有A项decline为“下降”的意思，为正确选项，其他选项B项grow“增长”，C项dislocate“混乱”，D项rearrange“重置”均不符合题意。
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