prep2-96 求解！5月27号要考了~~

96. (29547-!-item-!-188;#058&004302)

There are hopeful signs that we are shifting away from our heavy reliance on fossil fuels:  more than ten times as much energy is generated through wind power now than it was in 1990.

(A) generated through wind power now than it was
(B) generated through wind power now as it was
(C) generated through wind power now as was the case
(D) now generated through wind power as it was
(E) now generated through wind power than was the case

答案C

B,D错在哪里？

as was the case 这是什么用法？

as was the case是倒装。

BD中，it做代词指代和that不同，that指代重复的名词，it指代具体的同一个事物，考虑时应该将被指代名词后面的限定成分考虑进去。在这里it指代energy is generated through wind power now。不能同时是in 1990的那一个。

此题昨天我有讨论。

http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=324993&page=1