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题目内容双击单词支持查询和收藏哦～
Only novel ideas should be awarded patents; if a concept is _____________to practitioners in a given field or has previously been published in almost any fashion, that fact should invalidate the application.
- A.lucrative
- B.manifest
- C.presented
- D.described
- E.obvious
- F.rewarding
B,E显示答案
以上解析由 考满分老师提供。
