题目内容：
Questionsarebasedonthefollowingpassage. Despiteacoolingoftheeconomy,hightechnologycompaniesarestillcryingoutfor
skilledworkers.TheInformationTechnologyAssociationofAmericaprojectsthatmorethan800,000technologyjobswillgounfillednextyear.Thelackofqualifiedworkerspos-esahugethreattotheUSeconomy.
Themostcommonlycitedreasonforthisstateofaffairsisthatthecountry'sagrarian-ageeducationsystem,separatedfromtheneedsofthebusinessworld,failstopreparestu-dentsintheprimaryandsecondarygradesfortwenty-first-centurywork.Yetaninadequateandoutmodededucationsystemisonlypartoftheproblem.Alesstangiblebutequallypowerfulcauseisanantiqueclassificationsystemthatdividestheworkforceintotwocamps:white-collarknowledgeworkersandblue-collarmanuallabourers.
Blue-collarworkersemergedintheUnitedStatesduringtheIndustrialAgeasworkmi-gratedfromfarmstofactories.White-collarofficeworkersbecameasignificantclassinthetwentiethcentury,outnumberingtheirblue-collarbrethrenbymid-century.Butthewhiteorblueparadigmhasclearlyoutliveditsutility.Corporationsincreasinglyrequireanewlayerofknowledgeworker:ahighlyskilledmulti-disciplinarianwhocombinesthemindofthewhite-collarworkerwiththehandsoftheblue-collaremployee.Armedwithasolidgroundinginmathematicsandscience(physics,chemistry,andbiology),these"gold-collar"workers--sonamedfortheircontributionstotheircompaniesandtotheeconomy,aswellasfortheirpersonalearningability--applythatknowledgetotechnology.Ofcourse,thegold-collarworkeralreadyexistsinawiderangeofjobsacrossawiderangeofbusinesses:thinkofthemaintenancetechnicianwhotestsandrepairsaircraftsystemsatAmericanAir-lines;thenetworkadministratorwhomanagessystemsandnetworkoperationsatP&G;theadvanced-manufacturingtechnicianatIntel.
ButuntilAmericanbusinessrecognisesthesepeopleasanewclassofworker,onewhosecollarisneitherbluenorwhite,demandsthatschoolsdoabetterjobofpreparingemployeesforthetwenty-first-centuryworkforcewillbefutile.
Whateffectsmaytheinsufficiencyofqualifiedworkershave,accordingtothepassage? A．Itdecreasesthecostsofhightechnologycompanies.
B．Itemphasisestheimportanceofunfilledjobs.
C．IthindersthedevelopmentoftheUSeconomy.
D．Itacceleratesthecollapseoftheoldeducationsystem.
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答案解析：