求助：Prep1 - 57

junwang286

57.        (34655-!-item-!-188;#058&007580)



Roland:  The alarming fact is that 90 percent of thepeople in this country now report that they know someone who is unemployed.



Sharon:  But a normal, moderate level of unemploymentis 5 percent, with 1 out of 20 workers unemployed.  So at any given time if a person knowsapproximately 50 workers, 1 or more will very likely be unemployed.



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



(A) Thefact that 90% of the people know someone who is unemployed is not an indicationthat unemployment is abnormally high.

(B) Thecurrent level of unemployment is not moderate.

(C) Ifat least 5% of workers are unemployed, the result of questioning arepresentative group of people cannot be the percentage Roland cites.

(D) Itis unlikely that the people whose statements Roland cites are giving accuratereports.

(E) Ifan unemployment figure is given as a certain percent, the actual percentage ofthose without jobs is even higher.

这题为什么是选A？？

LittleMike

Roland想说失业率高，Sharon反驳她，理由就是题干中的部分……

rainbowmanutd

同问 ，不太懂~