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1、清华在线www.qinghuaonline.com010-6277116662781166PartIIIReadingComprehension(45minutes,30points)Directions:Therearesixpassagesinthispart.Eachpassageisfollowedbyfivequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA,B,CandD.Choosethebestanswera
2、ndmarkthecorrespondingletterontheANSWERSHEETwithasinglelinethroughthecenter.PassageOneAstronautJimVosshasenjoyedmanymemorablemomentsinhiscareer,includingthreespaceflightsandonespacewalk.Butherecallswithspecialfondnessadecidedlyearthbound(为地球所吸引)experienceinthe
3、summerof1980,whenheparticipatedintheNASA-ASEESummerFacultyFellowshipProgram.VossthenascienceteacheratWestPoint,wasassignedtotheMarshallSpaceFlightCenter'spropulsion(推进)labinAlabamatoanalyzewhyahydraulicfuelpumponthespaceshuttlewasworkingsowellwhenpreviousseals
4、hadfailed.Itwasaseeminglytinyproblemamongthevastcomplexitiesofrunningthespaceprogram.YetitwasimportanttoNASAbecauseanycrackinthesealcouldhaveledtodestructiveresultsfortheastronautswhoreliedonthem.“IworkedabitwithNASAengineers,”saysVoss,"butIdiditmostlybyanalys
5、is.Iusedahandheldcalculator,notacomputer,todoathermodynamic(热力学的)analysis,"Attheendofthesummer,he,liketheotherNASA-ASEEfellowsworkingatMarshall,summarizedhisf'indingsinaformalpresentationanddetailedpaper.ItwasavaluablemomentforVossbecausetheASEEprogramgavehima
6、ddedunderstandingofNASA,deepenedhisdesiretoflyinspace,andintensifiedhisapplicationforastronautstatus."Itwasnotanessayprocess.Vosswasactuallypassedoverwhenhefirstappliedfortheastronautprogramin1978.Overthenextnineyearshereappliedrepeatedly,andwasfinallyaccepted
7、in1987.Sincethenhehasparticipatedinthreespacemission.The50-year-oldArmyofficer,whofivesinHuston,isnowintrainingfroafour-monthmissionasacrewmemberontheInternationalSpaceStationstartinginJuly2000VosssaystheASEEprogramiswonderfulforallinvolved."Itbringsinpeoplefr
8、omtheacademicworldandgivesNASAaspecialproperlyforaparticularperiodoftime.ItbringssomefresheyesandfreshideastoNASA,andestablishesalinkwithourcollegesanduniversities,"23清华在线www.qingh
