大全 B-23

Newcomers to southern California are surprised to discover that, in spite of the temperate climate, heating bills are as high, or higher than, those in most Midwestern or eastern cities.

(A) as high, or higher than, those in

(B) as high, or higher than,

(C) as high as, or higher than,

(D) at least as high as those in（D）

(E) no lower than

我选的C，那不是固定用法吗？