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  3. The atmosphere and oceans are not the only parts of the environment being damaged. Rain forests are being quickly destroyed as w

The atmosphere and oceans are not the only parts of the environment being damaged. Rain forests are being quickly destroyed as w

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问题     The atmosphere and oceans are not the only parts of the environment being damaged. Rain forests are being quickly destroyed as well, and their survival is questionable. E. O. Wilson, a biologist at Harvard, calls the depletion(枯竭、耗尽)of rain forest areas "the greatest extinction since the end of the age of dinosaurs(恐龙)".
    Unlike some environmental issues, rain forest depletion has fortunately received significant public and media attention. Despite the opposition to the cutting down of rain forests, the problem continues. Every year, Brazil chops down one area of forest the size of the state of Nebraska. In addition to the Amazon’s rain forests, many other forests are being cut down as well. In Indonesia, Zaire, Papua New Guinea, Malaysia, Burma, the Philippines, Peru, Colombia, Bolivia, and Venezuela, rain forests that were once great have been lost.
    According to some estimates, 50 million acres of rain forest are cut down every year. The United Nations says the figure is closer to 17 million acres. The World Wildlife Fund says that every minute, 25 to 50 acres are cut or burned to the ground.
    The world’s growing population has been a primary reason of rain forest destruction. More people need land to live on and wood products to consume. Limiting population growth may be the first in a series of steps that would limit the destruction of the rain forests.
Why did the depletion of rain forests result from the world’s growing population?
① People liked cutting down large amounts of rain forests to make all kinds of furniture.
② People need more land to live on.
③ People must make more room to build all kinds of buildings to live in.
④ People need more wood products to use.
选项 A、①and②
B、①and②
C、③ and ④
D、② and ④
答案D
解析 本题问：为什么说雨林耗尽是世界人口日益增长之过?这是一道因果关系考题。文章的最后一节第二句话说的很明确：More people need land to live on and wood products toconsume．据此选D。
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