[求助]问一道新PREP逻辑题

Which of the following most logically completes the passage?

Concerned about the financial well-being of its elderly citizens, the government of Runagia decided two years ago to increase by 20 percent the government-provided pension paid to all Runagians over 65.  Inflation in the intervening period has been negligible, and the increase has been duly received by all eligible Runagians.  Nevertheless, many of them are no better off financially than they were before the increase, in large part because __________.

A. they rely entirely on the government pension for their income

B. Runagian banks are so inefficient that it can take up to three weeks to cash a pension check

C. they buy goods whose prices tend to rise especially fast in times of inflation

D. the pension was increased when the number of elderly Runagians below the poverty level reached an all-time high

E. in Runagia children typically supplement the income of elderly parents, but only by enough to provide them with a comfortable living

正确答案是E，但我选的是C。不明白E和题目有什么关系，如果小孩补贴老人的话，那老人生活应该更好才对，怎么能解释他们并没有富裕呢？

A. they rely entirely on the government pension for their income

与最后一句矛盾，直接略

B. Runagian banks are so inefficient that it can take up to three weeks to cash a pension check

也是无关选项

C. they buy goods whose prices tend to rise especially fast in times of inflation
    

其实我觉得这个选项也不错，但看到E后，觉得E更好，具体解释如下。 

D. the pension was increased when the number of elderly Runagians below the poverty level reached an all-time high

按照这句话的道理是应该better-off，与句意相反，排除

E. in Runagia children typically supplement the income of elderly parents, but only by enough to provide them with a comfortable living

C和E的区别：

区别1.主观和客观：C中他们主动选择买贵的导致他们less better off，反观E是因为客观的因素（儿女只给他们父母足够的钱，打个比方，父母最低需要100，儿女给100，现在政府给他们父母50，由于父母最低要求没变，且狠心的儿女仅需要他们满足最低标准，所以父母最后收的还是100）

如上啰嗦的，E是被动原因，更符合题意的需求，也更让人信服。

另外C的错误：

题目已经说了 Inflation in the intervening period has been negligible，言下之意就是说，一切inflation都没有作用，这就在整个推理中排除了任何与价格的因素，让读者寻找非价格的理由。

希望讲得明白，也欢迎讨论

以下是引用necroosu在2009/8/9 17:38:00的发言：

A. they rely entirely on the government pension for their income

与最后一句矛盾，直接略

B. Runagian banks are so inefficient that it can take up to three weeks to cash a pension check

也是无关选项

C. they buy goods whose prices tend to rise especially fast in times of inflation
 

其实我觉得这个选项也不错，但看到E后，觉得E更好，具体解释如下。 

D. the pension was increased when the number of elderly Runagians below the poverty level reached an all-time high

按照这句话的道理是应该better-off，与句意相反，排除

E. in Runagia children typically supplement the income of elderly parents, but only by enough to provide them with a comfortable living

C和E的区别：

区别1.主观和客观：C中他们主动选择买贵的导致他们less better off，反观E是因为客观的因素（儿女只给他们父母足够的钱，打个比方，父母最低需要100，儿女给100，现在政府给他们父母50，由于父母最低要求没变，且狠心的儿女仅需要他们满足最低标准，所以父母最后收的还是100）

如上啰嗦的，E是被动原因，更符合题意的需求，也更让人信服。

另外C的错误：

题目已经说了 Inflation in the intervening period has been negligible，言下之意就是说，一切inflation都没有作用，这就在整个推理中排除了任何与价格的因素，让读者寻找非价格的理由。

希望讲得明白，也欢迎讨论

谢谢，有点明白了，就觉得这题目好贱啊。