2. 外语
  3. The advantages and disadvantages of a large population have long been a(n)【C1】______of discussion among economists. It has been

The advantages and disadvantages of a large population have long been a(n)【C1】______of discussion among economists. It has been

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问题     The advantages and disadvantages of a large population have long been a(n)【C1】______of discussion among economists. It has been argued that the supply of good land is limited. To 【C2】______ a large population, the good land must be worded intensively and the【C3】______ land must be cultivated. Thus, each person 【C4】______less and this means a lower average income【C5】______ could be obtained with a smaller population. Other economists have argued that a large population gives more【C6】______for specialization and the development of facilities. 【C7】______there is a big demand to justify them, facilities such as ports, roads and railways are not【C8】______to be built.
    One of the difficulties in【C9】______a worldwide birth control program lies in the fact that official attitudes to population growth【C10】______from country to country depending on the level of industrial development and the availability of food and【C11】______ materials. In the developing country where a vastly【C12】______population is pressing harder and harder【C13】______the limits of food, space and natural resources, it will be the first concern of government to place a limit on the birth rate,【C14】______the consequences may be.
    In the highly industrialized society the problem may be more【C15】______. A decreasing birth rate may lead to unemployment because it results 【C16】______a declining market for manufactured goods.【C17】______ the pressure of population on housing declines, prices also decline and the building【C18】______ is weakened. Faced with considerations such as these, the government of a(n)【C19】______country may well prefer to see a slowly increasing population,【C20】______ one which is stable or in decline.
【C9】
选项 A、carrying on
B、carrying out
C、carrying through
D、carrying over
答案B
解析 动词短语辨析题。carry out意思是“实施，执行，落实，贯彻”，符合文意，因此正确答案为[B]。carry on一般指“继续(做某事)”；carry through指“成功地完成某事”；carry over的意思是“将……延后”，故[A]、[C]和[D]均可以排除。
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