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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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2013-06-03
13
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.
【C7】
选项
A、declined
B、lessened
C、descended
D、slipped
答案
A
解析
语义衔接题。前面提到过去孩子和老人之比为more than six to one,而现在这个比率为about three children per one older person,由此可知,现在这一比率下降了,故答案为[A]declined“下降”,常用来指质量、数量、重要性等下降。强干扰项[C]descended“下降;下来”常用来指空间上的下降;[B]lessened“变小,减少”不与ratio(比率)搭配使用;[D]slipped“滑动”。
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0
大学英语四级
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