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Weareconvinced____therighteousnessofourcause.

A、of
B、on
C、over
D、at
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答案解析:

【参考译文】 我们坚信自己的事业是正义的。

【试题分析】 本题是一道介词搭配题。

【详细解答】 “be convinced of”含义为“坚信……”,这是一个固定搭配,所以在四个选项中只能选择“of”。

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