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【单选题】

The atmosphere _______ of certain gases mixed together in definite proportions.
A.consists

B.comprises
C.composes
D.constitutes
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根据网考网移动考试中心的统计,该试题:

72%的考友选择了A选项

24%的考友选择了B选项

0%的考友选择了C选项

4%的考友选择了D选项

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