请教一道语法题

sunnyting1116

请教一道语法题:GWD-13-6

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

答案选E..但是不是capability of doing...吗..我选A..

fbfamous

A，B我认为错在tested+that是宾语从句，that后面没主语错。B还错在OR后面的TO HELP不平行。

C是错早没主语+BE，还有OR HELPING不平行

D的HELPING 不平行

fbfamous

我的疑问是CAPABILITY一定要跟这里用么？？要是E没有这个就不对了？？？

至于楼主的说的CAPABILITY我还真不知道对不对

不过CAPABILITY TO DO一定对（其实个人觉得+DOING也没啥不对的，DOING 当名词讲就可以嘛！我觉得啊。个人意见，不做参考，俺只是觉得这个跟POSSIBILITY+N不是一样嘛？呵呵见笑了）

joe11

gwd 11-33 同下 gwd 13-6
http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=57086&page=1

http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=58195&page=2

http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=53923

http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=64494&page=1

http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=69436&page=1