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Passage Three Questions 31 to 35 are based on the following passage. An understanding of man’s effect on the balance of nature is crucial(关键的)to being able to find the appropriate remedial action. It is a very common belief that the problems of the population explosion are caused mainly by poor people living in poor countries who do not know enough to limit their reproduction. This is not true. The actual number of people in an area is not as important as the effect they have on nature. Developing countries do have an effect on their environment，but it is the populations of richer countries that have a far greater impact on the earth as a whole. For example，tropical forests are known to be essential to the balance of nature，yet we are destroying them at a great rate. They are being cleared not to benefit A. rich people B. poor people C. natural disasters D. mankind 更多"Passage ThreeQuestions 31 to 35 are"的相关试题: [单项选择]
A. It is the smallest one of all the stars. B. It is the nearest one to the earth. C. It is the biggest one of all the stars. D. It is the farthest one from the earth. [单项选择]
A. It’s very interesting. B. It’s much the same. C. It’s very tiring. D. It’s very exciting. [单项选择]
A. The games shouldn’t be held in Salt Lake City. B. The games have met their environmental goals. C. The games did little to protect the environment. D. The games have caused lasting damages to the area. [单项选择]
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