prep 我老觉得B是对的~~ NN帮忙提点一下

jasminerocks

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


答案是选E  ，可是我看不出来B哪里错了，而且我觉得E好像句子成分不完整诶..........

fdrandom

B的extended错了，被延伸意思不对，and前后对称性也不好，and之前的逗号也多余。
E的谓语是was，没问题啊

ykelly123

E的was前面不用加逗号的吗？？？！！