Population aging is a triumph of civilization. It is the【C1】______consequenc

游客2023-07-12  26

问题     Population aging is a triumph of civilization. It is the【C1】______consequence of attaining desired smaller family sizes and longer lives, with many living beyond 100 years. This achievement, 【C2】______requires vital social and economic adjustments【C3】______expected future demographic (人口的) realities. In particular, population aging raises critical issues【C4】______economic growth, employment and retirement, 【C5】______health care and social support services. As a population ages, the【C6】______of elderly increases, and that of children decreases. For much of the past, children outnumbered (超过) the elderly by a factor of more than six to one. Today the ratio has【C7】______to about three children per one older person. 【C8】______within the next few decades, perhaps by 2060, the world’s elderly population will begin to【C9】______the population of children, when each group is expected to【C10】______for slightly less than one-fifth of the world population. Developed countries have already moved well along this transformation. But a notable【C11】______is the comparatively young U.S. population, where the number of children is 50%【C12】______than those aged 65 and older.
    Developing countries are now【C13】______a similar aging process, but【C14】______a much faster pace. Many developing countries that have experienced rapid fertility (人口出生率) are passing through this transition in a【C15】______of 25 years or less. As a(n) 【C16】______of such rapid changes, accommodating the necessary social and economic adjustments to older population age structures will likely be【C17】______more difficult for developing countries.
    The wide【C18】______of consequence of population aging is of mounting【C19】______and significance for more developed countries — and are also【C20】______a worry for less developed countries. [br] 【C1】

选项 A、indispensable
B、potential
C、inevitable
D、incredible

答案 C

解析 语义衔接题。实现预期的较小的家庭规模(即减少家庭中的新生人口数量)和延长人口寿命势必会造成青少年人口的减少,老年人口的增减,也就是导致老龄化,[C]inevitable“不可避免的;必然发生的”符合此处语境,故答案为[C]。[A]indispensable“不可缺少的;必需的”;[B]potential“潜在的;可能的”;[D]incredible“难以置信的:不可思议的”。
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