og-130

rosemarys

130. Bank depositors in US are all financially protected against bank failure because the government insures all individuals 's bank deposits . An economist argues that this insurance is partly responsible for the high rate of bank failure , since it removes from depositors any financial incentive to find out whether the bank that holds theri money is secure against failure . If depositros wre more selevive , then banks would need to be secure in order to compete for depositors's money.
assumtion.
d.The difference in the interest rates paid to depositors by different banks is not a significant factor in bank failures.
E. Potentail depositors are able to determine which banks are secure agaisnt failure

答案是e

但是D不是排除它因的假设吗。请指点

liuliyun

130.

The economist's argument makes which of the following assumptions?

(A) Bank failures are caused when big borrowers default on loan repayments.

(B) A significant proportion of depositors maintain accounts at several different banks.

(C) The more a depositor has to deposit, the more careful he or she tends to be in selecting a bank.

(D) The difference in the interest rates paid to depositors by different banks is not a significant

factor in bank failures.

(E) Potential depositors are able to determine which banks are secure against failure.

D 的difference in the interest rates....significant factor 表示D是无关选项吧

我的问题是B虽然一看是无关选项, 但是我看不懂OG对B的解释:

The argument is consistent with each depositor’s money being held by a single bank, so B is not assumed. ????

原文没有提到single bank呀?

请教NN的说.

periodic

两个原则:

1. (D)取非的话, 对原假设来说还是成立, 因为原假设围绕depositor和bank failure

2. 排除它因的选项多半为not only / sole factor (表唯一性)