题目内容

【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。A．by mistake错误地 B．by coincidence偶然地，碰巧C．on purpose故意地D．on 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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