GMAT逻辑题练习及答案(325)

2017-07-14 08:23

来源：新东方在线

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　　GMAT逻辑题目:

　　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.

　　GMAT逻辑答案:

　　Argument Construction

　　Situation

　　Roland is alarmed that 90% of the population knows someone who is out of work. Sharon replies that a normal level of unemployment is 5%, illustrating her point by saying that if a person knows 50 workers, at least one of them is likely to be unemployed.

　　Reasoning

　　Sharon’s reply leads to what conclusion about unemployment? Sharon begins her reply with "but," indicating that she is about to counter either Roland's statistic or his alarm; she accepts the statistic and addresses the alarm. If the normal level of unemployment rate is 5% and if the average person knows 50 workers, then knowing one person out of work is within the normal and expected range, not a cause for alarm. Sharon shows that it is possible for 90% of the population to know someone unemployed and for unemployment to be a normal rate of 5% at the same time.

　　A. Correct. This statement properly identifies the conclusion to which the argument is leading.

　　B. Sharon's argument is made in the abstract. No information is provided about the current level of unemployment.

　　C. Sharon does not challenge Roland's statistics, and her argument is not designed to make a conclusion about their accuracy, only their interpretation.

　　D. There is no information about the accuracy of Roland's reports, so no conclusion can be made about how likely or unlikely they are to be accurate.

　　E. No information in Sharon's argument supports this conclusion.

　　The correct answer is A.

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