OG10-64:句意不理解，哪位NN给帮忙解释一下。谢谢了。

64. Unlike a funded pension system, in Which contributions are invested to pay future beneficiaries, a pay-as-you-go approach is the foundation of Social Security.

(A)  a pay-as-you-go approach is the foundation of Social Security

(B)   the foundation of Social Security is a pay-as-you-go approach

(C)  the approach of Social Security is pay-as-you-go

(D)  Social Security's approach is pay-as-you-go

(E)   Social Security is founded on a pay-as-you-go approach

答案E。我也知道是考平行结构。可是我想了半天也不清楚到底谁跟pension system对应比较好。哪位NN能帮忙翻译一下。谢谢啦。

Unlike A, B do

其中A is a system, and B is Social Security (System) in Choice E.

即使你不知道社会保障系统，排出法也可以，ABCD四个选项中或是approach or foundation,都不可能和system并行，对吧

献丑了:

不象养老金制度-所交的钱用于支付给将来的受益人,社会保险是基于量入为出的方法.