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1.        As the price of gasoline rises, which makes substituting alcohol distilled from cereal grain attractive, the prices of bread and livestock feed are sure to increase.

(A) which makes substituting alcohol distilled from cereal grain attractive

(B) which makes substituting the distillation of alcohol from cereal grain attractive

(C) which makes distilling alcohol from cereal grain an attractive substitute

(D) making an attractive substitution of alcohol distilled from cereal grain

(E) making alcohol distilled from cereal grain an attractive substitute [E]

为什么是e，这是个什么结构，请nn指教，俺查了很多贴都没有解答！thx

高

thx

顶