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题目内容双击单词支持查询和收藏哦～
Many types of rocks contain small voids that ___________ vibrations: the greater proportion of a rock's volume that is void, the more gradually vibrations travel through it.
- A.amplify
- B.dampen
- C.generate
- D.impede
- E.produce
- F.conceal
B,D显示答案
以上解析由 考满分老师提供。
