PASSAGE THREE What does the word "contaminating" in Paragraph 3 mean?

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问题 PASSAGE THREE
What does the word "contaminating" in Paragraph 3 mean?

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答案Polluting．

解析结合该词所在的句子…constantly contaminating their waters…可知，contaminate的意思是“污染”，所以Polluting为正确答案。

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专业英语四级

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