[SC悬赏令] Prep 07 SC2 58关于比较对象

原题
If current trends continue, by theyear 2010 carbon emissions in the United States will soar to a

level more than one-third higher thanwere those in 1990, according to official projections.

(A) will soar to a level more thanone-third higher than were those

(C) would soar to a level more thanone-third higher than it was

(D) would soar to a level more thanone-third higher than those

(E) would soar to a level more thanone-third higher than they were

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A.    复数those不能指代单数level，因此只能强制指代前句的复数主语emissions，那么，句子变成将

level与emissions相比较，比较对象不对等

B.    正确。

C.    主语应该使用will，而不是would

D.    主语应该使用will，而不是would；复数those没有指代对象

E.    主语应该使用will，而不是would；复数they没有指代对象