If Newton lived today, he would be surprise by what ____ in science and technology.A. ha

 If Newton lived today, he would be surprise by what ____ in science and technology.

A. had discovered     B. had been discovered

C. has discovered     D. has been discovered

 

 

答案

D

解析:首先判断“what”“discover”之间为被动关系,排除AC; 再从整个题干时态(lived, would be)判断是虚拟语气,表示与现在相反,故应选D,表示到目前为止所发现的。.

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