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.
on whether significant warming will occur and what impact will it have if it does
on whether warming that occurs will be significant and the impact it would have
as to whether significant warming will occur or the impact it would have if it did
over whether there will be significant warming or the impact it will have
over whether significant warming will occur and what impact it would have
"whether or用在这里错误,这里表达的是两件独立的事情,而不是选择 排除CD
B改变语意,原意是会不会发生,而不是会不会重大
A and后面语序错误 后面相当于是宾语从句,不能用疑问句句式"
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