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