最新题目
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Human’s pollution on nature is for the most part_..
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_________(57)A.examined B.found C.taken D.investi..
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_________(47)A.For an adult time goes fast year b..
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An ongoing survey shows that_______.A.employers b..
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The effect of life modifying its surroundings has..
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Paragraph 6_______A.Man should be cautious in che..
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