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题目内容双击单词支持查询和收藏哦～
The theory that the young Mercury collided with another planet appears ________ given Mercury' s abundance of volatile elements: a collision would have boiled such elements away.
- A.tenuous
- B.simplistic
- C.germane
- D.improbable
- E.apposite
- F.unoriginal
A,D显示答案
以上解析由 考满分老师提供。
