prep 1# 7请进

7.    So-called green taxes, which exact a price for the use of polluting or nonrenewable fuels, are having a positive effect on the environment and natural resource base of countries as varied as
                China, the Netherlands, and Hungary.

(A) as varied as

(B) as varied as are

(C) as varied as those of

(D) that are as varied as

(E) that are varied as are

请问考点是什么？我觉得D对～～～