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题目内容双击单词支持查询和收藏哦～
The hypothesis that the moon formed from a planetary impact could account for the ____________ of water and other volatiles on the Moon since such an impact would have caused volatiles to escape into space.
- A.condensation
- B.paucity
- C.nullity
- D.ephemerality
- E.dearth
- F.occurrence
B,E显示答案
以上解析由 考满分老师提供。
