请问Prep 93的答案是？我下载的版本这题没有答案，谢谢了

93. Those skeptical of the extent of global warming argue that short-term temperature data are an inadequate means of predicting long-term trends and point out that the scientific community remains divided on whether significant warming will occur and what impact will it have if it does.

A. on whether significant warming will occur and what impact will it have if it does.

B. on whether warming that occurs will be significant and the impact it would have

C. as to whether significant warming will occur or the impact it would have if it did

D. over whether there will be significant warming or the impact it will have

E. over whether significant warming will occur and what impact it would have

我选了E,　对么？

选e为什么要用what impact it would have 不用 will have  .怎么判断是虚拟的? d 哪里不对

请nn解答一下,马上就考了

A,B,E are all incorrect

the correct idiom of whether should be "whether...or", not "whether...and"

I think the answer is C

Also, I have look up the Longman and I neither find the idiom of "divide on/as to/over"

So I think the preposition might not be the point.

For the answer D, I think "there will be" is not parallel with "the impact"

Personal opinion, open to discuss!

A. on whether significant warming will occur and what impact will it have if it does. (罗嗦）

B. on whether warming that occurs will be significant and the impact it would have 莫名奇妙，whether应后引导从句

C. as to whether significant warming will occur or the impact it would have if it did （as to,没道理

D. over whether there will be significant warming or the impact it will have （不平行

E. over whether significant warming will occur and what impact it would have对

注意意思，over whether+从句＋and+what+从句，而不是whether or not 形式～

谢谢leoozop指教，豁然开朗！！

我也选E~~