[求助]885-sec5-25

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 economy 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 its economy

(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 diversified 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

请问

1）D最后的"it was",是不是代表：state's economy was?为什么than后要补全成句子呢？谢谢

2）为什么要用D中的making形式，用CE中的to do或and do形式可不可以？

是。it was不能省略，省略的一个原则是省略前文出现过的内容，前面没有出现过be动词，所以不能省略it was.

这里分词短语做结果状语, 表示经济的多元化是由于电子和银行业的职位的增多。如果是to do, and do, 那么应该和前面主句的gain another quarter-million jobs对应，改变了句子的意思和逻辑。

thanks, I understood in your 1st explaination and am still confused in your 2nd explain

to do,为什么没有和前面主句的gain another quarter-million jobs对应？to make不是就说明many of them in high-paying fields like electronics and banking,的结果的吗？

to 表示目的，但是gain another quarter-million jobs 与the state’s economy far more diversified 没有因果关系。

所以我说"经济的多元化是由于电子和银行业的职位的增多".