The passage mentions all of the following factors for the existence of life EXCEPT

题库:综合类 类型:最佳选择题 时间:2017-07-03 03:14:16 免费下载:《单选题》Word试卷

The passage mentions all of the following factors for the existence of life EXCEPT
A.the right amount of atmosphere.
B.a steady supply of water.
C.steady heat and light.
D.the right distance from the sun.

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