GWD 21-1

GWD 21-1

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)

E. at speeds much higher than are

answer：E

我不明白为什么than后面要补出are呢？much前面的是名词speeds那than后面补也应该是个名词吗？

than后面补出are可以理解，不过还是不明白为什么名词和句子进行比较也可以?

我也想知道。NN现身!

试着展开一下:

...an alliance... would enable customers to receive ...data at speeds (that are) much higher than (speeds that) are currently possilbe.

不知道这样对不对。为什么要这么省略呢?  

A. with 错，is 错。

B.with 错

C. as 错

D. that 错，对应speeds 应为复数

请NN指正。

E有两个不妥之处：（1）high是作为形容词修饰speed的，怎么后置呢？

（2）在than之后补充一个are有点奇怪啊

虽然也觉得D中的that不好，但是E也解释不过去阿