急!路过的NN进来看看几道GWD语法

According to analysts, an alliance between three major personal computer companies and most of the nation’s largest local telephone companies would enable customers to receive internet data over regular telephone lines with speeds much higher than is currently possible.

A.      with speeds much higher than is

B.       with speeds that are much higher than are

C.      at much higher speeds as are

D.      at much higher speeds than that

E.       at speeds much higher than are

想不通怎么还原啊 这个ARE是指什么哦???

A.              on the basis of avoidance of duplicated facilities alone

B.               on the grounds of avoiding duplicated facilities alone

C.              solely in that duplicated facilities should be avoided

D.              while the duplication of facilities should be avoided

E.               if only because the duplication of facilities should be avoided

非常迷惑不知道为什么又选了E 哪位牛牛可以翻译下吧

thanks