Question

It is said in the book that Thomas Edison(1847～1931)_________ the world leading

It is said in the book that Thomas Edison(1847～1931)_________ the world leading inventor for sixty years．
A. would be
B. has been
C. had been
D. was

Answer 1

答案D
考查时态，Thomas Edison(1847～1931)以前是个“inventor”而不是至今仍是，因此B项不对；C项“过去的过去”，没有时态对比，因为句中没出现一般过去时；A项不合题意；D项was表示书中现在所提到的是以前的事，因此用一般过去时。