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题目内容双击单词支持查询和收藏哦～
The ____________ effectiveness of lithium as a mood-altering drug for both manic and depressive states cannot be completely explained; most mood-altering drugs can only be used to modify one state or the other.
- A.dubious
- B.neglected
- C.questionable
- D.paradoxical
- E.latent
D显示答案
以上解析由 考满分老师提供。
