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题目内容双击单词支持查询和收藏哦～
The reduction of noise has been approached in terms of _____ its sources, but the alternative of canceling noise out by adding sound with the opposite wave pattern may be more useful in practice.
- A.diffusing
- B.tracking
- C.concealing
- D.isolating
- E.eliminating
E显示答案
以上解析由 考满分老师提供。
