防水包过女儿墙:It is written in the book that Thomas Edison ____the world's leading inventor over sixty years.

来源:百度文库 编辑:查人人中国名人网 时间:2024/05/03 04:09:16
It is written in the book that Thomas Edison ____the world's leading inventor over sixty years.
A would be B has been C had been D was
答案是D WHY?

D是对的,就是讲一个事实。

A的意思不对了。
如果选B的话,意思就是他现在已经不是了,be是个延续性的动词,这样用不好。
C的意思就更不对了,在过去的某一时间段他就已经不是最伟大的科学家了。