北京地区成人本科学位英语统一考试.doc

北京地区成人本科学位英语统一考试.doc

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北京地区成人本科学士学位英语统一考试

2011年05月07日

　　PartI 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______。

　　A.     herresearchhasshedlightonherunderstandingofcellphone

　　B.     shefoundthatcellphoneexposureisharmfultohumanbrain

　　C.     shefoundthatusingacellphoneforabout50minutescouldinfluenceorchangebrainactivity

　　D.     humanbrainisnotresponsivetoelectromagneticradiation

　　3.      Accordingtothepassage,cellphoneswerelaunched_______。

　　A.     inthelate1970s     B.between1980and1985

　　B.     inthelate1980s   D.intheearly1990s

　　4.      Whatdoestheword“that”standforinthesecondparagraph?

　　A.     Brainactivity。

　　B.     Herresearchfindings。

　　C.     Thefactthatcellphoneusemaycausecancer。

　　D.     Herresearchprogress。

　　5.      Whichofthefollowingisanappropriatetitleforthispassage?

　　A.     CellPhoneRadiation:

IsItHarmful?

　　B.     CellPhoneRadiati0n:

IsItUseful?

　　C.     CellPhoneRadiation:

IsItHealthy?

　　D.     CellPhoneRadiation:

IsItWeak?

　　Passage2

　　Questions6to10arebasedonthefollowingpassage:

　　Humanbeingshavealwayshadanabilitytoattendtoseveralthingsatonce.（78）Noriselectronicmultitaskingentirelynew:

We’vebeendrivingwhilelisteningtocarradiossincetheybecamepopularinthe1930s.butthereisnodoubtthatmultitaskinghasreachedakindofwarpspeedintheeraofWeb-enabledcomputers,whenithasbecomeroutinetoconductseveralIM（及时通讯）conversations,watchTVandusethecomputerallatonce。

　　Butwhat’stheimpactofthismediaconsumption?

Andhowarethesemultitaskingdeviceschanginghowkidslearn,reasonandcommunicatewithoneanother?

Socialscientistsandeducatorsarejustbeginningtodealwiththesequestions,buttheresearchersalreadyhavesomestrongopinions。

　　（79）Althoughmultitaskingkidsmaybebetterpreparedinsomewaysfortoday’sfast-pacedworkplaced,Manyscienti