DF-CR14-15,16 Questions 15-16 are based on the following. Roland: The alarming fact is that 90 percent of the people in this country now report that they know someone who is unemployed. Sharon: But a normal, moderate level of unemployment is 5 percent, with 1 out of 20 workers unem- ployed. So at any given time if a person knows approximately 50 workers, 1 or more will very likely be unemployed.
16. Sharon's argument relies on the assumption that (A) normal levels of unemployment are rarely exceeded (B) unemployment is not normally concentrated in geographically isolated segments of the population
答案:B,A如何判断不是假设.
Bank depositors in the United States are all financially protected against bank failure because the government insures all individuals' bank deposits. An economist argues that this insurance is partly responsible for the high rate of bank failures, since it removes from depositors any financial incentive to find out whether the bank that holds their money is secure against failure. If depositors were more selective, then banks would need to be secure in order to compete for depositors' money. 7. The economist's argument makes which of the follow- ing 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 deposi- tors by different banks is not a significant factor in bank failures. (E) Potential depositors are able to determine which banks are secure against failure.
谢谢. 作者: kathy72 时间: 2003-11-10 19:44
16.将A取非, 即使超过一般的失业率, 例如高达10%, 不妨碍结论"at any given time if a person knows approximately 50 workers, 1 or more will very likely be unemployed."成立呀.