题目内容

Most countries of the world have records of the great natural catastrophes that before.

A. had occurred B. have occurred

C. occurs D. would occur

B

【解析】

试题分析:考查时态。have occurred:已经发生,主句是一般现在时,从句发生在主句动作之前,且有before,故用现在完成时。句意:世界上大多数国家都有已经发生的重大自然灾害的记载。故选B

考点:考查时态

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