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2016年6月大学英语四级阅读练习:population

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SEO知否谈Canonical标签考研英语阅读备考:精读、泛读缺一不可 近几年来,考研文章的题材呈现出两个显著特点,一是选文内容比较新颖,二是涉及的领域较广阔,包括经济、文化、教育、科技、法律、社会等问题。为了达到对文章的透彻理解,考生必须积极扩大自己的知识面,多去了解新知识,了解社会热点问题,如:计算机网络、信息等技术的应用带来的影响,医学、教育、法律等方面的一些争议,经济上的热点问题、全球化问题等等。相信知识面的扩大无疑将加深考生对文章的理解,拓展把握题的思路。阅读面扩大方面,考生既可以拿一些阅读理解题来做,看一些小段落的阅读材料,也可以翻阅一些英语报刊,比如《...

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2016年6月大学英语四级阅读练习:population

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, the 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 successfully in the recent past, when available infrastructure was doubled in two decades or so. It is no wonder that much has been said about the need to reduce or preferably halt Mexico's 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 population are complicated, as the following discussion illustrates.

Even if Mexico's population reaches 125 million by the year 2010, 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 2010. 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 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 accurately, increasing productive losses) , and people become a cost rather than an asset. If we assume that there are sustainability limits and that we are close to reaching these limits at a world level, then it is appropriate to check population growth.

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