GWD-5-41 急需指点多谢

saroya

Q41:

The greatest road system built in the Americas prior to the arrival of Christopher Columbus was the Incan highway, which, over 2,500 miles long and extending from northern Ecuador through Peru to Southern Chile.

A Columbus was the Incan highway, which, over 2,500 miles long and extending

B Columbus was the Incan highway, over 2,500 miles in length, and extended

C Columbus, the Incan highway, which was over 2,500 miles in length and extended

D Columbus, the Incan highway, being over 2,500 miles in length, was extended

E Columbus, the Incan highway was over 2,500 miles long, extending

答案是E 但B那里错了？

wei_wangyan

E. The greatest road system built in the Americas prior to the arrival of Christopher Columbus, the Incan highway
        was over 2,500 miles long, extending from northern Ecuador through Peru to Southern Chile.

偶认为E出现了两个主语。

saroya

E 开头是主语同位语 没有错 。 B 好像也没错啊

wind_flower

我也不明白为什么B不对(B和E好像都看不出什么问题，我就卡在这里了)。谁来指点一下？谢谢啊~~

adlinker

B中extended的主语不对。是the Incan highway extended 而不是The greatest road system extended。

E把同位语提前，如果按照这样的排列，就很容易选择了.

the Incan highway, the greatest road system built in the Americas prior to the arrival of Christopherwas, was over 2,500 miles long, extending from northern Ecuador through Peru to Southern Chile.