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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