阅读下列四篇短文，从每小题后所给的A,B,C或D四个选项中，选出最佳选项。Theterm“underemployment”hasthreerelatedmeanings.Inonesense,itreferstoasituationinwhichsomeonewithexcellentjobqualifications(资格)isworkinginapositionthatrequireslessqualifications,asforinstanceinthecaseofalawyerdrivingaschoolbus.Inthesecondsense,itmeansworkingpart-timewhenonewouldprefertobeworkingfull-time.Inthethirdsense,itisaformofoverstaffing(人浮于事)inwhichemployeesarenotbeingfullymadeuseof.Allformsofunderemploymenthaveeffectontheeconomyandthehealthofthebusinesscommunity.Long-termunderemploymentcanalsocoverupthetruthbehindtheemploymentsituations.Whennationscollectemploymentstatistics,theyusuallycomeupwithabasenumberof“unemployed”individuals,usingthatnumbertojudgethehealthofthejobmarket.Thisnumberdoesnotincludepart-timeworkerslookingforfull-timejobs,astheyareconsideredemployed,anditalsodoesn’treflectworkerswhoareunderpaid,consideringtheirqualifications.Inthefirstsense,underemploymentisacommonprobleminmanyofthedevelopedworld.Manypeoplewithcollegedegreesareworkinginlow-levelorserviceindustryjobsbecausethejobmarketisfull.Theissueofpart-timeemploymentisalsoveryserious.Somepeopleareforcedintopart-timejobs,whileothersfindthemselvestakingapart-timejobbecausenothingelseisavailable,eventhoughtheyreallyneedtoworkfull-time.Thisproblemisespeciallycommoninareaswithseasonalemployment,whereemployersfinditcheapertomaintainandlayoffpart-timestaffs,ratherthankeepingafullstaffatalltimes.Inthesenseofshortageofworkers,underemploymentappearsinavarietyofsituations.Somecompaniesmaintainafullstafftobepreparedforseasonalwork,ortokeepwell-trained,qualifiedworkerssothattheywillbeavailablewhenneeded.Laborlawsandunionpressuresmayalsopreventacompanyfromcuttingdownonstafforworkinghours,leadingtoasituationinwhichpeoplereporttowork,buthavenothingtodo.1.Thepurposeofthepassageis.A.toshowunderemploymentisbecomingmoreserioustodayB.toimplywomenarelaidoffmorethanmenC.toexplainthemeaningof“underemployment”D.totellthepresenteconomicsituations2.Accordingtothetex