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

b. with speed 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 that are

答案是E，请各位NN指点一下are在E里是个什么意思？

答案E是不是应该是...much higher than are

这句话是...much higher than (speeds) are...的缩写