这道题新东方是不是讲错了？请大牛指点

Florida will gain another quarter-million jobs this year alone, many of them in high-paying fields like electronics and banking, making the state's econmoy far more diversified than ten years ago.

A）high-paying fields like electronics and banking, making the state's economy far more diversified than

B) high-paying fields like electronics and banking, and making the state's economy far more diversified than

C) high-paying fields such as electronics and banking, to make the state's economy far more diversified than

D)such high-paying fields as electronics and banking, making the state's economy far more diversifed than it was  (D)

E)such high-paying fields as electronics and banking, and make the state's economy far more diversified than it was

答案选D， 请问各位NN，D中state's economy 怎么能和it was这个句子比呢？难道是state's economy后面省略了was？但是make sth. adj.又不可能加was啊。

对比另一题：

GWD1-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.

A.      a greater proportion than it was

B.       a greater proportion than

C.      a greater proportion than they have been

D.      which is greater than was so

      E    which is greater than it has been

这题选B，说不选A是因为A的助动词was 补错了，那选B的原因是不是可以把句子这么说：tv costs accounted for a greater proportion in the presidential campaign of 1992 than tv costs accounted for in any previous election, 就是把独立主格a greater proportion 代替原句子中的more than half the spending 然后再进行比较？这题和上面一题的than后面一题补了it was 一题又没补，这怎么解释呢？请高手指点！

同问同问啊。。。希望NN们指点！！

同问同问，顶一下

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.

 a greater proportion  half the spending in the presidential campaign of 1992是同位语

句子可以缩为

Soaring television costs accounted for proportion than ...

所以A错，应改为 then they did

correct me if i m wrong.

同意楼上那位的解释，但不知道第一题怎么解释呢？