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 [if it did]
答案是E，
我选了A，不太明白E这个虚拟语气，是不是省略了后面的条件从句？
顶！
以上情况是虚拟语气，具体说叫＂推测条件句＂中的虚拟．虚拟语气：把动作当作一种只存在于讲话人想象中的＂假设＂或者＂推测＂，而不是当作客观现实中的真实事件．推测条件句的结构： １、if subject +动词过去式 ２、if subject +should +动词原形 ３、if subject +were to do 本句属于３
１、if subject +动词过去式
２、if subject +should +动词原形
３、if subject +were to do
本句属于３
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