请教GWD 28-18

knight9514

28-18: Which of the following most logically completes the passage?

Concerned about 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

答案是E 请问是什么意思啊

alanguo

E可说了西方福利社会的一个天大的问题：老人们的福利是从年轻人工作所创造的财富中而来的。而这些国家往往生育率低于死亡率，所以年轻人越来越少。而他们挣的钱没有显著增加，所以供给老人们的养老福利就不会增多。

daoying

政府的老年人津贴增加20%（忽略通货膨胀因素，且增加的津贴发放到位），但许多老年人并没有因此得到财务上的改善，因为——

1）他们仅靠政府津贴（总收入=政府津贴，政府津贴增加，则总收入必然增加）

2）该地银行效率低下，津贴支票需要三周才能兑现。（时间长，但不改变总收入，注意不考虑通货膨胀，因此也无需考虑时间价值）

3）他们所购买的东西再通货膨胀期间的涨价尤其快（他们购买的属于必需品，因此通货膨胀的影响大，但已经说了不考虑通货膨胀）

4）在低于最低保障的老人数量持续高涨时，津贴增加了（文不对题，无关）

5）该地区的孩子一般都补贴他们的老爸老妈，但只是补贴到他们一个舒适的生活水平。（总收入=政府津贴+孩子给的补贴，孩子给的补贴是变量，以保证总收入一个稳定水平。因此，政府津贴增加，孩子的补贴就减少了，总收入不变）