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职称英语卫生类考试考前每日一练 阅读下面的短文，文章中有5处空白，文章后面有6组文字，请根据文章的内容选择5组文字，将其分别放回文章原有位置，以恢复文章原貌。请将答案涂在答题卡相应的位置上。 The advantages and disadvantages of large population have long been a subject of dis-cussion among economists. 46 . To feed a large population, inferior land must be culti-vated and the good land worked intensively. 47 . Other economists have argued that a large population gives more scope for specialization and the development of facilities such as ports, roads and. railways, 48 . One of the difficulties in carrying out a; world wide. birth control program lies in the fact that official attitudes, to population growth vary. from Country to country depending on the level of industrial development and the availability of food and raw materials. In the developing country where a vastly expanded population is pressing hard upon the limits of food, space and natural resources, 49 In a highly industrialized society the problem may be more complex. A decreasing birth rate may lead to unemployment 50 . When the :pressure of population on housing declines, prices also decline and the building industry is weakened. Faced with considerations such as these, the government of a developed coun-try may well prefer to see a slowly increasing population, rather than one which is stable or in decline. | 
