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The first use of atomic weapons was in 1945, and their power increased enormousl

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The first use of atomic weapons was in 1945, and their power increased enormousl

The firstuse of atomic weapons was in 1945, and their

power  increased enormously ever since.

A.is  B.was   C.has been       D. had been

 

试题答案

答案:C

提示:

eversince“从那以后”,指从1945年以后到现在,所以句子应用现在完成时态。