In September2008,China's key milestone in space travel( )when Zhai Zhigang conducted the(见下方）first spacewalkA.reached B.was reached C.has reached D.had been reached该题正确答案应选B,说明其他几项为什么不对,

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/03 04:33:55
In September2008,China's key milestone in space travel( )when Zhai Zhigang conducted the(见下方）first spacewalkA.reached B.was reached C.has reached D.had been reached该题正确答案应选B,说明其他几项为什么不对,

In September2008,China's key milestone in space travel( )when Zhai Zhigang conducted the(见下方）first spacewalkA.reached B.was reached C.has reached D.had been reached该题正确答案应选B,说明其他几项为什么不对,
In September2008,China's key milestone in space travel( )when Zhai Zhigang conducted the(见下方）
first spacewalk
A.reached B.was reached C.has reached D.had been reached
该题正确答案应选B,说明其他几项为什么不对,

In September2008,China's key milestone in space travel( )when Zhai Zhigang conducted the(见下方）first spacewalkA.reached B.was reached C.has reached D.had been reached该题正确答案应选B,说明其他几项为什么不对,
1.首先应该用被动语态,所以A,C排除；
2.由于时间是2008年9月,用一般过去时态就可以了,不用过去完成时态.所以D不对.

reach是及物动词,这里后面没有出现宾语,显然是用了被动语态.a和c排除,d时态和语句意思不符,选b

里程碑被人们reach达到了，，被动。。。不用AC
when表示某个时间，所以不用D 完成时

Where is Ho Chi Minh City?In vietnam.如题 In September2008,China's key milestone in space travel( )when Zhai Zhigang conducted the(见下方）first spacewalkA.reached B.was reached C.has reached D.had been reached该题正确答案应选B,说明其他几项为什么不对, CHI CKENS Chi Chi is me是什么意思 英语,填介词there's no similar expression( ) manman chi in Ehglish. 26.They sat in their new car (comfortably) ________ than in the old one.27.Tom is studying Chi Sigma Delta Chi是什么意思原句Sigma Delta Chi's first Code of Ethics was borrowed from theAmerican Society of Newspaper Editors in 1926. In 1973, Sigma Delta Chiwrote its own code, which was revised in 1984, 1987 and 1996. 求chi chi 别开玩笑mp3 姓chi的chi怎么写 chi鱼的chi怎么写 拼音的ing in zhang zang chi ci chao cao 怎么区分我打字时老是搞不清. TSUI CHI 什么意思? 电子表的chi是什么意思 越南语chi lam Approx.Chi-Square是什么意思 英语Chi Chiu 以苎报chi tai chi是什么意思