白勇一道语法，郁闷》

lanyuqi

5. In the 1980's the rate of increase of the minority population of the United States was nearly twice as fast as the 1970's.
(A) twice as fast as
(B) twice as fast as it was in
(C) twice what it was in
(D) two times faster than that of
(E) two times greater than

 

答案是C，为什么不选B呢.

iamsleeping

c最简洁！哈哈哈哈......
我觉得这个句子的主语是“rate”，说"rate is twice as fast..."好像有点怪怪的。
楼主，你的问题都很难哦......

liubin1987

根据时间状语的对称,所以肯定在B和C这两个用in的选项中选.而句子的主语是rate,所以应该是加C选项的结构好.而B是错误的把主语理解成increase了

lanyuqi

Mayanist

非常好，确认主语是这题的关键：

In the 1980's the rate of increase of the minority population of the United States was nearly twice as fast as the 1970's.


(A) twice as fast as
(B) twice as fast as it was in
(C) twice what it was in

            

        
Parallelism:
The rate in the 1980's and the rate (referred by it in what it was construction) should be parallel. Alternatively, the sentence can be rephrased as: The increase of xxx in the 1980's was nearly twice as fast as that in the 1970's.