[讨论]prep2-47 有关虚拟语气

47.   (27004-!-item-!-188;#058&003398)

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

答案是E

我觉得这里whether....和what impact两个要么都用虚拟，要么都不用，为啥一个用，一个不用呢？

whether accorded with what

so a and e

in the clause,it should be :what impact it will or.would (if it did)

同问。