单选题
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The American baby boom after the war made unconvincing U.S. advice to poor countries that they restrain their births. However, there has hardly been a year since 1957 in which birth rates have not fallen in the United States and other rich countries, and in 1976 the fall was especially sharp. Both former East Germany and former West Germany have fewer births than they have deaths, and the United States is only temporarily able to avoid this condition because the children of the baby boom are now an exceptionally large group of married couples.
It is true that Americans do not typically plan their births to set an example for developing nations. We are more affected by women's liberation: once women see interesting and well-paid jobs and careers available, they are less willing to provide free labor for child raising. From costing nothing, children suddenly come to seem impossibly expensive. And to the high cost of children are added the uncertainties introduced by divorce, couples are increasingly unwilling to subject children to the terrible experience of marital breakdown and themselves to the difficulty of raising a child alone.
These circumstances—women working outside the home and the instability of marriage—tend to spread with industrial society and they will affect more and more countries during the remainder of this century. Along with them goes social mobility, ambition to rise in the urban world, a main factor in bringing down the births in Europe in the nineteenth century.
Food shortage will happen again when the reserves resulting from the good harvests of 1976 and 1977 have been consumed. Urbanization is likely to continue with the cities of the developing nations struggling under the weight of twice their present populations by the year 2000. The presently rich countries are approaching a stable population largely because of the changed place of women? and they incidentally are setting an example of restraint to the rest of the world. Industrial society will spread to the poor countries and aspirations will exceed resources. All this leads to a population in the twenty-first century that is smaller than was feared a few years ago. For those anxious to see world population brought under control the news is encouraging.
单选题 During the years from 1957 to 1976, the birth rate of the United States ______.
【正确答案】 C
【答案解析】参看第一段第二句:自1957年,美国和其他一些富裕国家,人口出生率每一年都在下降,故答案为C项。
单选题 What influences the birth rate most in the United States is ______.
【正确答案】 B
【答案解析】妇女独立的愿望,即第二段第二句提到的妇女解放运动,最后一段又说到妇女地位的改变是当今富裕国家保持人口稳定的一个原因。
单选题 The sentence "From costing nothing children suddenly come to seem impossibly expensive" (Para.2) implies that ______.
【正确答案】 C
【答案解析】该句不能孤立理解,参看它上面一句:一旦妇女看到既有趣,收入又高的工作,她们就不再愿意牺牲自己而来抚养孩子。抚养孩子突然耗费大起来,即指妇女放弃既有趣,收入又高的工作。
单选题 A chief factor in bringing down the births in Europe in the 19th century is ______.
【正确答案】 B
【答案解析】参看第三段最后一句,the main factor与ambition to rise in the urban world是同位语,即是19世纪欧洲出生率下降的主要原因。
单选题 The population in the 21st century according to the writer ______.
【正确答案】 D
【答案解析】发展中国家的人口增长很快,人们担心21世纪人口会使人类承受不了。但根据最后一段倒数第一、二句:21世纪人口要少于几年前的预料。