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【题目】After losing contact for twenty years, they met again _________ in a party

A. by mistake B. by coincidence

C. on purpose D. on display

【答案】B

【解析】试题分析:考查介词词组辨析。Aby mistake错误地 Bby coincidence偶然地,碰巧Con purpose故意地Don display公开展出;句意:在失联了二十年后,他们偶然地又一次在派对上碰到。根据句意,故选B.

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