[求助]刘振民语法第九章例题第18题

对不起，贴不出来。

我想不通为什么as great as or greater than that of using air conditioning是错的，而at least as great as that incurred by using air conditioning是对的？

答案说，前者的that指代句子的主语，即“wind resistance”，而后一个选项的that指代“fuel”。

谁能给个解释吗？是不是因为前一个句子是介宾结构，后一个句子是主谓结构？

找到原题了，平行对成，前面created by opening

謝謝回答！

剛剛下載了那個破密碼的軟件，把原題貼上來。

9—18 Wind resistance created by opening windows while driving results in a fuel penalty as
great or greater than is incurred by using air conditioning．
(A) as great or greater than is incurred by using air conditioning
(B)that is as great or greater than is incurred using air conditioning
(C)as great as or greater than that of using air conditioning
(D)at least as great as air conditioning’s
(E)at least as great as that incurred by using air conditioning