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> The first use of atomic weapons was in 1945.And their power _______ increased enormously ever since.
The first use of atomic weapons was in 1945.And their power _______ increased enormously ever since.
题目简介
The first use of atomic weapons was in 1945.And their power _______ increased enormously ever since.
题目详情
The first use of atomic weapons was in 1945.And their power _______ increased enormously ever since.
A.is
B.was
C.has been
D.had been
题型:单选题
难度:中档
来源:不详
答案
C
此题考查时态的用法。前面讲1945年首次使用原子弹,而后面一句无确定的过去时间,但ever since确定了应选C项,因为ever since和完成时态连用,指的是“从那以后”,即since 1945。
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题目简介
The first use of atomic weapons was in 1945.And their power _______ increased enormously ever since.
题目详情
答案