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题目内容双击单词支持查询和收藏哦～
Even though some governments are now expressing alarm over their nations'_____________ birth rates, the planetary threat of human overpopulation has not ceased to concern many scientists and environmentalists.
- A.fluctuating
- B.incommensurate
- C.burgeoning
- D.flagging
- E.thriving
- F.languishing
D,F显示答案
以上解析由 考满分老师提供。
