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题目内容双击单词支持查询和收藏哦～
Although the claim that no one knows what dark matter is remains _____, some scientists dispute the parallel assertion that dark matter has not been detected.
- A.contentious
- B.sound
- C.questionable
- D.unassailable
- E.unverifiable
- F.prominent
B,D显示答案
以上解析由 考满分老师提供。
