prep 1-106

锦城碎叶

Officials at the United States Mint believe that the Sacagawea dollar coin will be used more as a substitute for four quarters rather than for the dollar bill because its weight, only 8.1 grams, is far less than four quarters, which weigh 5.67 grams each.

 

(A) more as a substitute for four quarters rather than for the dollar bill because its weight, only 8.1 grams, is far less than

(B) more as a substitute for four quarters than the dollar bill because it weighs only 8.1 grams, far lighter than

(C) as a substitute for four quarters more than for the dollar bill because it weighs only 8.1 grams, far less than

(D) as a substitute for four quarters more than the dollar bill because its weight of only 8.1 grams is far lighter than it is for

(E) as a substitute more for four quarters rather than for the dollar bill because its weight, only 8.1 grams, is far less than it is for

答案是C，但是four quarters 后面是不是该加一个do？比较结构中的实意动词不是该用do或does代替吗？

锦城碎叶

有没人能讲讲比较结构中的省略原则？