北京2011年成人本科学士学位英语统一考试真题及答案文档格式.doc
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北京2011年成人本科学士学位英语统一考试真题及答案文档格式.doc
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ReadingComprehension(30%)
Directions:
Therearethreepassagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA,B,CandD.YoushoulddecideonthebestchoiceandblackenthecorrespondingletterontheAnswerSheet。
Passage1
QuestionsIto5arebasedonthefollowingpassage:
Spending50minuteswithacellphoneclosetoyourearisenoughtochangebraincellactivityinthepartofthebrainclosesttotheantenna(天线).Butwhetherthatcausesanyharmisnotclear,scientistsattheNationalInstituteofHealthsaidataconferencelastmonth,addingthatthestudywillnotlikelysettleconcernsof
alinkbetweencellphonesandbraincancer.“Whatweshowedisglucose(葡萄糖)metabolism(代谢)(asignofbrainactivity)increasesinthebraininpeoplewhowereexposedtoacellphoneintheareaclosesttotheantenna,”saidDr.NoraVolkowoftheNIH,whosestudywaspublishedintheJournaloftheAmericanMedicalAssociation.(76)Thestudywasmeanttoexaminehowthebrainreactstoelectromagneticfieldscausedbywirelessphonesignals。
Volkowsaidshewassurprisedthattheweakelectromagneticradiation(电磁辐射)fromcellphonescouldaffectbrainactivity,butshesaidthefindingsdonotshedanylightonwhethercellphonescausecancer.“Thisstudydoesnotinanywayindicatethat.Whatthestudydoesistoshowthehumanbrainissensitivetoelectromagneticradiationfromcellphoneexposures。
”Useofthedeviceshasincreaseddramaticallysincetheywereintroducedintheearly1980s,withabout5billioncellphonesnowinuseworldwide。
Somestudieshavelinkedcellphoneexposuretoanincreasedriskofbraincancers,butalargestudybutheWorldHealthOrganizationdidnotofferaclearanswertothis.Volkow’steamstudied47peoplewhohadtheirbrainexaminedwhileacellphonewasturnedonfor50minutesandanotherwhilethephonewasturnedoff.Whiletherewasnocompletechangeinbrainmetabolism,theyfounda7percentincreaseinbrainmetabolismintheregionclosesttothecellphoneantennawhenthephonewason。
(77)Expertssaidtheresultswereinteresting,buturgedthattheybeunderstoodwithgreatcare.“Althoughthebiologicalsignificance,ifany,ofincreasedglucosemetabolismfromtoomuchcellphoneexposureisunknown,theresultsrequirefurtherinvestigation,”HenryLaioftheUniversityofWashingtonintheU.S.andDr.LennartHardellofUniversityHospitalinSweden,wroteinanarticleinJAMA.“Muchhastobedonetofurtherinvestigateandunderstandtheseeffects。
”Theywrote。
1.
Accordingtothepassage,whichofthefollowingisTRUE?
A.
Cellphoneuseisdangerous。
B.
Cellphoneusecausescancer。
C.
Thehumanbrainisanelectromagneticfield。
D.
Thereareabout5billioncellphoneusersintheworldrightnow。
2.
DoctorVolkowwasastonishedbecause______。
herresearchhasshedlightonherunderstandingofcellphone
shefoundthatcellphoneexposureisharmfultohumanbrain
shefoundthatusingacellphoneforabout50minutescouldinfluenceorchangebrainactivity
humanbrainisnotresponsivetoelectromagneticradiation
3.
Accordingtothepassage,cellphoneswerelaunched_______。
inthelate1970s
B.between1980and1985
inthelate1980s
D.intheearly1990s
4.
Whatdoestheword“that”standforinthesecondparagraph?
Brainactivity。
Herresearchfindings。
Thefactthatcellphoneusemaycausecancer。
Herresearchprogress。
5.
Whichofthefollowingisanappropriatetitleforthispassage?
CellPhoneRadiation:
IsItHarmful?
CellPhoneRadiati0n:
IsItUseful?
IsItHealthy?
IsItWeak?
Passage2
Questions6to10arebasedonthefollowingpassage:
Humanbeingshavealwayshadanabilitytoattendtoseveralthingsatonce.(78)Noriselectronicmultitaskingentirelynew:
We’vebeendrivingwhilelisteningtocarradiossincetheybecamepopularinthe1930s.butthereisnodoubtthatmultitaskinghasreachedakindofwarpspeedintheeraofWeb-enabledcomputers,whenithasbecomeroutinetoconductseveralIM(及时通讯)conversations,watchTVandusethecomputerallatonce。
Butwhat’stheimpactofthismediaconsumption?
Andhowarethesemultitaskingdeviceschanginghowkidslearn,reasonandcommunicatewithoneanother?
Socialscientistsandeducatorsarejustbeginningtodealwiththesequestions,buttheresearchersalreadyhavesomestrongopinions。
(79)Althoughmultitaskingkidsmaybebetterpreparedin
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