跳跃指代GWD

草木染湘

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
Answer: E
可能我有妄想症，但是我真的觉得A好像如果可以表示为条约指代的话，这个答案还有点像正确的。请大侠来说一说这个跳跃指代吧。

fdrandom

答案有争议么？感觉A更好。 E选项capability应该和of doing搭配吧，而且一个机器have the capability很奇怪

helio5

E里面the capability to propel 是一处硬伤啊
我同意楼上的意见
也是觉得A更好。
原句谓语也很短，完全符合跳跃指代的要求。

fdrandom

想起来，E选项could和have the capability语义重复了，所以E是错的

草木染湘

大家都觉得A更好吗。。。

200814005

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
Answer: E
可能我有妄想症，但是我真的觉得A好像如果可以表示为条约指代的话，这个答案还有点像正确的。请大侠来说一说这个跳跃指代吧。

-- by 会员 草木染湘 (2011/9/7 10:21:35)

个人意见。
首先E。我不确定是不是capability to to/ of doing都可以，毕竟我木有看过Manhattan(http://forum.chasedream.com/GMAT_SC/thread-455811-1-1.html?postid=14060367&searchmode=TopicContent&searchtext=type%20of%20jet%20engine),但是确认的一点事Longman里面说了capability to do.所以至少+to do并不存在语法问题。


至于语义重复等等，大家说的很充分了，就不罗嗦了。


其次。A选项。
我觉得这道题主干的正确顺序是：
a new type of jet engine 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(超长的修饰语)  is being tested

所以为了避免头重脚轻，也就是主句的主语和谓语隔开太远，才把修饰成分放在最后了。
这种语法现象在Prep里面也有出现过。
所以如果这样理解的话，跳跃修饰就不是问题啦
而且这样的逻辑意思更为通畅~当然是相比较E而言哈~


个人意见哈~大家再讨论咯~~