The first use of atomic weapons was in 1945, and their power increased enormously ever sin
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解决时间 2021-01-03 17:50
- 提问者网友：沦陷
- 2021-01-03 12:46
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.
最佳答案
- 五星知识达人网友：掌灯师
- 2021-01-03 13:05
A. isB. was(答案→)C. has beenD. had been.解析：and 连接的是前后两个句子。第二句中的their power 为主语。
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- 1楼网友：一秋
- 2021-01-03 14:17
这个解释是对的
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