GMAT逻辑OG12-71问题!71.Roland:Thealarmingfactisthat90percentofthepeopleinthiscountrynowreportthattheyknowsomeonewhoisunemployed.Sharon:Butanormal,moderatelevelofunemploymentis5percent,withoneoutof20workersunempl

　　GMAT逻辑OG12-71问题!

　　71.Roland:Thealarmingfactisthat90percentofthepeopleinthiscountrynowreportthattheyknowsomeonewhoisunemployed.

　　Sharon:Butanormal,moderatelevelofunemploymentis5percent,withoneoutof20workersunemployed.Soatanygiventimeifapersonknowsapproximately50workers,oneormorewillverylikelybeunemployed.

　　Sharon’sargumentreliesontheassumptionthat

　　(A)normallevelsofunemploymentarerarelyexceeded

　　(B)unemploymentisnotnormallyconcentratedingeographicallyisolatedsegmentsofthepopulation

　　(C)thenumberofpeoplewhoeachknowsomeonewhoisunemployedisalwayshigherthan90percentofthepopulation

　　(D)Rolandisnotconsciouslydistortingthestatisticshepresents

　　(E)knowledgethatapersonalacquaintanceisunemployedgeneratesmorefearoflosingone’sjobthandoesknowledgeofunemploymentstatistics.

　　为什么选B?C哪里不对?