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It is said in the book that Thomas Edison (1847—1931)______the world leading inv
It is said in the book that Thomas Edison (1847—1931)______the world leading inv
游客
2025-07-27
8
管理
问题
It is said in the book that Thomas Edison (1847—1931)______the world leading inven- tor for sixty years.
选项
A、would be
B、has been
C、had been
D、was
答案
D
解析
本题考点为时态。A项为过去将来时,表示“过去的将来”;B项为现在完成时,表示到现在为止,一直”;C项为过去完成时,表示“在过去一段时间一直”;D项为一般过去时,表示“过去是”。由于时间状语没有表明60年的具体时间,故排除C。A、B不符合题意。
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