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  3. Scientists say that plant and animal life in thousands of lakes in the United States and Canada has already been destroyed by ac

Scientists say that plant and animal life in thousands of lakes in the United States and Canada has already been destroyed by ac

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问题 Scientists say that plant and animal life in thousands of lakes in the United States and Canada has already been destroyed by acid rain.
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答案科学家们说，在美国和加拿大成千上万的湖泊中的动植物已经因酸雨而遭到破坏。
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