一直没搞明白ＧＷＤ１３，谢谢拉

jessiebetty

Q6:

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

为什么是Ｅ呢，Ａ不行？？一直没搞明白，谢谢拉

ala_cool

A 不能选是因为that作为限制性定语从句只能修饰最靠近的成分，显然that 不能修饰 tested,   而是修饰engine。修改的方法，换that为，which，（不是最好方案），或者用同位语修饰，或者用独立分句指名修饰对象。在本题中，DE使用了独立分句，但D语法不对，所以选 E