英语语法题(94)-动词的时态和语态 P149 No.8The 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 答案+思路,3Q

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英语语法题(94)-动词的时态和语态 P149 No.8The 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  答案+思路,3Q

英语语法题(94)-动词的时态和语态 P149 No.8The 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 答案+思路,3Q
英语语法题(94)-动词的时态和语态 P149 No.8
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
答案+思路,3Q

英语语法题(94)-动词的时态和语态 P149 No.8The 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 答案+思路,3Q
C.因为有ever since所以用完成时.

句意:第一次使用核武器是在1945年,从那时起,核武器的威力就已经空前的提高了。
ever since 从那时起 即可排除A.C.
在根据句意,只有D了。

选C...先看关键词:ever since再从意思入手...从那时起得到空前的起高..对现在产生影响...用现在完成时

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