27. According to a recent study, retirees in the United States are four times more likely to give regular financial aid to their children as to receive it from them.

A、 retirees in the United States are four times more likely to give regular financial aid to their children as
B、 retirees in the United States are four times as likely to give regular financial aid to their children as it is for them
C、 retirees 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 retirees in the United States to give regular financial aid to their children than they are
E、 it is four times as likely that retirees in the United States will give their children regular financial aid as they are

【正确答案】 C

【答案解析】 Diction; Parallelism
The sentence notes a difference, for retirees in the United States, between the likelihood that they will give regular financial aid to their children and the likelihood that they will receive regular financial aid from their children. The elements of the comparison need to be expressed in parallel and in a proper construction.
A This sentence improperly implements the construction for times more likely to X than to Y, with X corresponding to give regular financial aid to their children and Y corresponding to receive it from them. Instead of the word than that would be used in this construction, the sentence improperly uses as.
B This sentence, like sentence A, improperly uses as. It also lacks parallelism, because to give regular financial aid to their children is not parallel to it is for them to receive it from them.
C Correct. This sentence resolves both of the issues discussed in connection with sentences A and B. In addition to properly using than in the construction four times more likely to X than to Y, the sentence properly lists in parallel the two elements being compared—to give regular financial aid to their children and to receive it from them.
D This sentence, in addition to being somewhat more wordy than necessary, lacks parallelism. The phrase to give regular financial aid to their children is not parallel to they are to receive it from them. The words they are in the second phrase are superfluous and make the sentence more difficult to read than necessary, and can simply be removed.
E This sentence is hard to parse and lacks parallelism. It is difficult to see what two phrases represent the elements to be compared and thus what needs to be parallel with what. This makes the sentence difficult to read.
The correct answer is C.