2. 考研
  3. ______ no gravity, there would be no air around the earth. heace no life.

______ no gravity, there would be no air around the earth. heace no life.

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问题 ______ no gravity, there would be no air around the earth. heace no life.
选项 A、If there had been
B、If there was
C、Had there been
D、Were there
答案D
解析
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