问题 选择题

It is said in the book that Tomas Edison (1847-1931) _______ the world leading inventor for thirty years.

A.would be

B.has been

C.was

D.had been

答案

答案:C

考查时态。根据句意可知书中陈述的事实为过去发生的,故用一般过去时,选C。

单项选择题
单项选择题