2. 外语
  3. We are convinced that we are on the _______ of an important discovery.

We are convinced that we are on the _______ of an important discovery.

admin2014-03-02  51
问题 We are convinced that we are on the _______ of an important discovery.
选项 A、threshold
B、household
C、thread
D、entrance
答案A
解析 threshold开始，开端；household家庭，一家人；thread线，线索，思路；entrance入口，入门。
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