请教一个问题。。

hhftnt · 发表于 2011-11-3 14:31:50

GWD-11-33
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A 没问题。
E错在could和capbility重复没问题

我想问一下 E选项的结构。
就是 A new type of jet........ ,and it could...........

it指代前面主语，那这种主谓宾,and 代词 +谓语能用吗？其中这个代词是指代前句主语。这种表达累赘吗？以往的正选中，有谁看过类似表达吗

hhftnt · 发表于 2011-11-4 14:57:39

UP UP

本贴相关题目 TN-09-SC-23 (QDMO)

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请教一个问题。。

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