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1、xx英语四级考试阅读精选练习题及答案 xx英语四级考试阅读精选练习题及答案 The future population will be older than today, and this in turn will change the patterns of social demands. However, Mexico will still be far from the aging societies that will most likely prevail (占优势 ) in the industrialized countries. In less than 25 years, t
2、he country will have to add almost as much infrastructure as it has already built up to now, simply to maintain services and production at the current levels. This will be a tremendous challenge, although a similar one was faced suessfully in the recent past, when available infrastructure was double
3、d in two decades or so. It is no wonder that much has been said about the need to reduce or preferably halt Mexicos population control which is taken for granted as both good and necessary. It has also gained supporters in the developing world, and Mexico is no exception. But the arguments about pop
4、ulation are plicated, as the following discussion illustrates. Even if Mexicos population reaches 125 million by the year xx, its population density is still smaller than the 1985 population density of some 50 countries. By international standards Mexico will still not be overpopulated by the year x
5、x. If wealth is generated by people, the more individuals there are, the greater the wealth that potentially could be generated. Why should Mexico control its population at density levels below those of the richer countries if more population represents the possibility of generating more wealth? On
6、the other hand, it is often pointed out that once sustainability(支撑力) limits are near or are reached, there are decreasing productivity gains (or,perhaps more aurately, increasing productive losses) , and people bee a cost rather than an asset. If we assume that there are sustainability limits and t
7、hat we are close to reaching these limits at a world level, then it is appropriate to check population growth. 21. Aording to the passage, the population argument is focused on. A. whether more people are a property or a cost B. whether Mexico should control its population growth or not C. whether t
8、he density of population in Mexico is large or small D. what the standard international sustainability limit is 22. Which of the following is TRUE aording to the first paragraph? A. Mexico has stepped into an aging society. B. It is not necessary for Mexico to control its population. C. Mexico popul
9、ation is younger than that of developed countries. D. It is not necessary for Mexico to develop its infrastructure. 23. By infrastructure(Para. 2) the author means. A. buildings B. the basic framework of a country, such as schools, services, etc. C. social demands D. services and production 24. It m
10、ay be inferred from the 3rd paragraph that. A. it isnt necessary for Mexico to control its population growth B. population is likely to grow at a slower pace than in the past C. the more people there are, the greater the wealth people could generate D. Mexico should control its population growth because she belongs to the developing countries 25. To check population growth is necessary when. A. there are decreasing productivity gains B. there are increasing productivity losses C. we are close to reaching the sustainability limits at a world level D. people bee a cost
