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标题: 请教：gwd13-11-q33 [打印本页]

作者: candysj 时间: 2007-12-12 17:28
标题: 请教：gwd13-11-q33

After more than four decades of research and development, a new type of jet engine is being tested that could eventually propel aircraft anywhere in the world within two hours or help boost cargoes into space at significantly lower costs than current methods permit.

A. tested that could eventually propel aircraft anywhere in the world within two hours or help

B. tested that could eventually have the capability of propelling aircraft anywhere in the world within two hours or to help

C. tested, eventually able to propel aircraft anywhere in the world within two hours, or helping

D. tested, and it eventually could propel aircraft anywhere in the world within two hours or helping

E. tested, and it could eventually have the capability to propel aircraft anywhere in the world within two hours or help

作者: allln123123 时间: 2007-12-12 18:36
E?

作者: allln123123 时间: 2007-12-12 18:39

http://forum.chasedream.com/dispbbs.asp?BoardID=23&replyID=1729612&id=183239&skin=0

应该是a

作者: matrix_zt 时间: 2007-12-12 19:45
这题没想到是“that”修饰“jet engine”，挺迷惑的，容易错

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