The Internet celebrated its birthday on September 2nd, by which time 40 years since the f
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解决时间 2021-03-07 05:24
- 提问者网友：伴风望海
- 2021-03-06 09:17
The Internet celebrated its birthday on September 2nd, by which time 40 years since the first successful transfer of data between two computers.
A. has passed
B. had passed
C. passed
D. have passed
最佳答案
- 五星知识达人网友：动情书生
- 2020-11-03 21:01
A. has passed(答案→)B. had passedC. passedD. have passed解析：考查时态，by which time引导定语从句，by+过去时间，谓语用过去完成时，句意是：互联网在九月二日庆祝了自己的生日，到这个时间时间为止自从两台计算机之间的第一个成功的通过的数据传输已经过去有40年了。选B。
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- 1楼网友：拾荒鲤
- 2020-08-10 19:45
我好好复习下
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