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The growth of population during the past few centuries is no proof that population will continue to grow straight upward toward
The growth of population during the past few centuries is no proof that population will continue to grow straight upward toward
admin
2013-06-03
21
问题
The growth of population during the past few centuries is no proof that population will continue to grow straight upward toward infinity and doom. On the contrary, demographic history offers evidence that population growth has not been at all constant. According to paleo-ecologist Edward Deevey, the; past million years show three momentous changes. The first, a rapid increase in population around one million B. C, followed the innovations of tool-making and tool-using. But when the new power from the use of tools had been exploited, the rate of world population growth fell and became almost stable.
The next rapid jump in population started perhaps 10,000 years ago, when men began to keep herds, plow and plant the earth. Once again when initial productivity gains had been absorbed, the rate of population growth abated.
These two episodes suggest that the third great change, the present rapid growth, which began in the West between 250 and 350 years ago, may also slow down when, or if technology begins to yield fewer innovations. Of course, the current knowledge revolution may continue without foreseeable end. Either way contrary to popular belief in constant geometric growth-population can be expected in the long run to adjust to productivity. And when one takes this view, population growth is seen to represent economic progress and human triumph rather than social failure.
What is found to have close relationship with rapid increase in population?
选项
A、War between 2 countries.
B、Ways discovered to increase productivity.
C、Migration from a continent to another continent.
D、A new religion beginning to be accepted by people.
答案
B
解析
从人类三次重大变化中我们知道每次人口增长都与生产力、和生产方式的提高有关,所以正确答案为B;A.两国之间的战争;C人口从一个大陆向另一个大陆的迁移;D.一种新的宗教开始为人们所接受;这三项均与本文不符或无关。
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0
大学英语四级
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