gwd-21-1

Q1:

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.

1. with speeds much higher than is
2. with speeds that are much higher than are
3. at much higher speeds as are
4. at much higher speeds than that
5. at speeds much higher than are

答案是e,想问“are”是什么用法呀？

补齐谓语阿

。。。。。。。

at speeds that are much higher than current speeds are  

that are 可以省略

好像是这样啦 speeds ，所以是are