(A) the elderly in the United States are four times more likely to give regular financial aid to their children as

(B) the elderly in the United States are four times as likely to give regular financial aid to their children as it is for them

(C) the elderly in the United States are four times more likely to give regular financial aid to their children than

(D) it is four times more likely for the elderly in the United States to give regular financial aid to their children than they are

(E) it is four times as likely that the elderly in the United States will give their children regular financial aid as they are

Ans:C

請問

....to give regular financial aid to their children than to receive it from them.

their refers to the elderly but them refers to children 會不會產生歧異??

一个句子里面代词指代一般是要指代同一个对象的。不过我以前也看到过类似的没有指代同一个。

但是逻辑意思非常清楚，你能够很清楚看出来指代的对象是谁。那就不会产生歧义了。

而且GMAT语法的答案是比较出来的。