Q16:

Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election.

1. a greater proportion than it was
2. a greater proportion than
3. a greater proportion than they have been
4. which is greater than was so

支持B.
C中accounted是主动, have been (accounted)是被动. 如果是, a greater

proportion than they have还能考虑一下.

Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election.

1. a greater proportion than it was
   
2. a greater proportion than
   
3. a greater proportion than they have been
   
4. which is greater than was so

我是这样来做这个题目的。

A，C，D，E时态有差异，先看时态。

1992那就是过去的时态，过去选举对现在的比例没有什么影响，排除C，E。

再分析句子结构。

Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election.

主语Soaring television costs ，谓语是accounted for 宾语 spending 。接下来如果是句子，要么主从要么并列，A是一个句子但他既没有并列连词也没有从属关系的词语，所以A错。

D中SO是多余的，即使去掉so,也没有B 好。

简洁原则嘛

偶也选B

many thanks !!!!