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【单选题】

Man must stop _______ the earth’s atmosphere.
A、filling
B、wasting
C、polluting
D、blackening

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参考答案：

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根据网考网移动考试中心的统计，该试题：

30%的考友选择了A选项

8%的考友选择了B选项

53%的考友选择了C选项

9%的考友选择了D选项

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