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新视野大学英语听说教程第二版第三册听力原文和答案

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the environment. Problems resulting from\rthis include global warming and health concerns for people. Oil drilling\ralso causes environmental problems, as oil coming up to the surface of\rthe ground spills into the surrounding land..\rA second major problem is that oil transportation is dangerous to wildlife.\rOil spills, possible when we transport oil by ship, are extremely deadly to\rmarine life.\rAnd a third major problem is that oil is limited. Since oil takes millions of\ryears to form, and since we are using a lot of it, we will eventually run\rout. When that day comes, the world will be in real trouble. Thus, it's\rbetter to develop new methods for generating energy now.

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