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题目内容双击单词支持查询和收藏哦～
Natural selection has favored some instinctive reactions of organisms over others, so only those that promote survival and reproduction have become established, but instinctive responses need not be : they may adjust over time.
- A.determinative
- B.immutable
- C.heritable
- D.reflexive
- E.idiosyncratic
B显示答案
以上解析由 考满分老师提供。
