题目内容：
Questionsarebasedonthefollowingpassage. Variousstudieshaveshownthatincreasedspendingoneducationhasnotledtomeasurableimprovementsinlearning.Between1980and2008,staffandteachersatU.S.publicschoolsgrewroughlytwiceasfastasstudents.Yetstudentsshowednoadditionallearninginachievementtests.
Universitiesshowsimilartrendsofincreasedadministrationpersonnelandcostswithoutgreaterlearning,asdocumentedinRichardArumandJosipaRoksa'srecentbookAcademicallyAdrift:LimitedLearningonCollegeCampuses.
Asurveyshowsthat63%ofemployerssaythatrecentcollegegraduatesdon'thavethesldllstheyneedtosucceedand25%ofemployerssaythatentry-levelwritingskillsarelacking.
Somesimplisticallyattributethedeclineinourpubliceducationsystemtothedrainofskilledstudentsbyprivateschools,butfarmoresignificanteventswereatwork.
Publicschoolsworkedwelluntilaboutthe1970s.Infact,untilthattime,publicschoolsprovidedfarbettereducationthanprivateones.Itwastheunderperformingstudentswhowerethrownoutofpublicschoolsandwenttoprivateones.
Aprominentreasonpublicschoolsdidwellwasthatmanyhighlyqualifiedwomenhadfewoptionsforworldngoutsidethehouseotherthanbeingteachersornurses.Theyacceptedrelativelylowpay,difficultworkingconditions,andgavetheirverybest.
Havingsuchalargesupplyoftalentedwomenteachersmeantthatsocietycouldpaylessfortheirservices.Women'sliberationopenedupnewprofessionalopportunitiesforwomen,and,overtime,someofthebestleftteachingasacareeroption,bringingaboutagradualdeclineinthequalityofschooling.
Alsoaroundthattime,regulations,government,andunionscametodictatepay,preventac~ustments,andintroducebureaucratic(官僚的)standardforadvancement.Largeeducationbureaucraciesandunionscametodominatethelandscape,confusingactivitywithachievement.Bureaucratsregularlyrewritecurriculums,talknonsenseabouttheoriesofeducation,andrequireevermoreadmires"trators.Theendresulthasbeenthat,afterallthespending,studentshaveworsemathandreadingskillsthanboththeirforeignpeersandearliergenerationsspendingfarlessoneducation--asalltheaccumulatingevidencenowdocuments.
WhatdowelearnfromvariousstudiesonAmerica'spubliceducation? A．Achievementtestshavefailedtotrulyreflectthequalityofteaching.
B．Publicschools-lacktheresourcestocompetewithprivateschools.
C．Littleimprovementineducationhasresultedfromincreasedspending.
D．Thenumberofstudentshasincreasedmuchfasterthanthatofteachers.
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