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1、六级真题20122007年12月六级真题试题和答案TheUnitedStateshasalmostalloftheworld5sbestuniversities.ArecentChinesesurveyranks35Americanuniversitiesamongthetop50，eightamongthetop10.OurresearchuniversitieshavebeenthekeytodevelopingthecompetitiveadvantagesthathelpAmericansproduce25%ofallt
2、heworld5swealth.In2007,623,805oftheworld?sbrighteststudentswereattractedtoAmericanuniversities.Yet,therearesignsofperil（危险）withinAmericanhighereducation・U・S・collegeshavetocompeteinthemarketplace.Studentsmaychooseamong6,000public,private,nonprofit,forprofit,orreligiou
3、sinstitutionsofhigherlearning.Inaddition,almostallofthe532billionthefederalgovernmentprovidesforuniversityresearchisawardedcompetitively.Butmanycollegesanduniversitiesarestuckinthepast.Forinstance,theideaofthefall-to-springuschoolyear95hasn9tchangedmuchsincebeforethe
4、AmericanRevolution,whenwewereasummerstretchnolongermakessense・FormerGeorgeWashingtonUniversitypresidentStephenTrachtenbergestimatesthatatypicalcollegeusesitsfacilitiesforacademicpurposesalittlemorethanhalfthecalendaryear.uWhilecollegefacilitiessitidle,theycontinuetog
5、eneratemaintenanceexpensesthatcontributetothehighcostofrunningacollege,”hehaswritten・Withinacademicdepartments,tenure（终身职位），combinedwithage-discriminationlaws,makesfacultyturnover—criticalforauniversitytoremaincurrentinchangingtimes―ifficult・Insteadofprotectingspeech
6、andencouragingdiversityandinnovativethinking,thetenuresystemoftenstifles（压制
7、）them:youngerprofessorsmustwintheapprovalofestablishedcolleaguesfortenure,encouraginglike-mindednessandsometimesinhibitingthefreeflowofideas・Meanwhile,tuitionhassoared,leavinggraduatingstuden
8、tswithunprecedentedloandebt.Strongcampuspresidentstomanagetheseproblemsarebecominghardertofind,andtokeep・Infact,studentsnowstayoncampusalmostaslongastheirpresidents.Theaverageamountoftimestudentsnowtaketocompleteanundergraduatedegreehasstretchedtosixyearsandsevenmont
9、hsasstudentsinterruptedbywork,inconveniencedbyunavailableclasses,orluredbyonemorefootballseasonfindithardtograduate・Congresshastrie
