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本題由chris提供

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 unemployed. So at any given time if a person knows approximately 50 workers, 1 or more will very be unemployed.

Sharon's argument is structured to lead to which of the following as a conclusion?


    A. The fact that 90% of the people know someone who is unemployed is not an indication that unemployment is abnormally high.

    B. The current level of unemployment is not moderate.

    C. If at least 5% of workers are unemployed, the result of questioning a representative group of people cannot be the percentage Roland cites.

    D. It is unlikely that the people whose statements Roland cites are giving accurate reports.

    E. If an unemployment figure is given as a certain percent, the actual percentage of those without jobs is even higher.


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答案:
A
R:90%人認(rèn)?
?失業(yè)者 S:正常情況,適中的失業(yè)率為5%,20人里一人失業(yè)。這樣如果一個(gè)人認(rèn)識(shí)50人,1人或以上失業(yè)的概率很大 結(jié)論題,根據(jù)S的推理得結(jié)論 (A) 90%的人認(rèn)識(shí)失業(yè)的人不能說(shuō)明失業(yè)率高;正確 (B) 目前失業(yè)率不是適中的;無(wú)根據(jù)推理,排 (C) 如果至少5%人失業(yè),結(jié)果不可能是R所引用的比例;無(wú)根據(jù)推理,排 (D) R引用的人報(bào)告是不精確的;無(wú)根據(jù)推理,排 (E) 如果失業(yè)數(shù)字是一個(gè)比例,實(shí)際失業(yè)率會(huì)更高;無(wú)根據(jù)推理,排

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