2. 外语
  3. Population aging is a triumph of civilization. It is the【C1】______consequence of attaining desired smaller family sizes and long

Population aging is a triumph of civilization. It is the【C1】______consequence of attaining desired smaller family sizes and long

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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.
【C18】
选项 A、amount
B、extent
C、range
D、scope
答案C
解析 语义衔接题。[A]amount“数量；总额”不能用wide修饰，故先排除。结合语境，此处应该是说人口老龄化的多种后果，[C]range表示变化的范围，强调多样性，符合此处语境，故为答案。[B]ex-tent“程度；范围”强调程度；[D]scope常指活动的范围、领域等，一般是比较抽象的，比如人的见识、学识的广度、研究的领域等。
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大学英语四级

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