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最佳答案：Global warming refers to the rising average temperature of Earth's atmosphere an
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最佳答案：The Global WarmingWith the development of economy, People around the world may f
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最佳答案：Global warning is the direct consequence of human activity
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最佳答案：冰山融化：Melting glaciers全球气候变暖：Global warming
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最佳答案：as we all know,we couldn't live without oxygen. and the oxygen is produced by ve
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最佳答案：Since the beginning of the industrial revolution,emission of carbon dioxide has
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最佳答案：How can I help to answer the global warming as a middleschool-student ?The Earth
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最佳答案：Owing to the warming weather,there are many unknown species found in Antarctic a
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最佳答案：Nowadays human being faces a lot of environmental problems,one of which is globa
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最佳答案：With the increasing severity of global warming,people have to face the challenge