北京地区成人学士学位英语统一考试真题及答案Word下载.docx

北京地区成人学士学位英语统一考试真题及答案Word下载.docx

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saidDr.NoraVolkowoftheNIH,whosestudywaspublishedintheJournaloftheAmericanMedicalAssociation.（76）Thestudywasmeanttoexaminehowthebrainreactstoelectromagneticfieldscaused

bywirelessphonesignals.

Volkowsaidshewassurprisedthattheweakelectromagneticradiation（电磁辐射）fromcell

phonescouldaffectbrainactivity,butshesaidthefindingsdonotshedanylightonwhethercell

phonescausecancer."

Thisstudydoesnotinanywayindicatethat.Whatthestudydoesistoshowthehumanbrainissensitivetoelectromagneticradiationfromcellphoneexposures."

Useofthedeviceshasincreaseddramaticallysincetheywereintroducedintheearly1980s,withabout5billioncellphonesnowinuseworldwide.

Somestudieshavelinkedcellphoneexposuretoanincreasedriskofbraincancers,butalargestudybytheWorldHealthOrganizationdidnotofferaclearanswertothis.Volkow'

steamstudied47peoplewhohadtheirbrainexaminedwhileacellphonewasturnedonfor50minutesandanotherwhilethephonewasturnedoff.Whiletherewasnocompletechangeinbrainmetabolism,

theyfounda7percentincreaseinbrainmetabolismintheregionclosesttothecellphoneantenna

whenthephonewason.

（77）Expertssaidtheresultswereinteresting,buturgedthattheybeunderstoodwithgreatcare."

Althoughthebiologicalsignificance,ifany,ofincreasedglucosemetabolismfromtoomuchcellphoneexposureisunknown,theresultsrequirefurtherinvestigation,"

HenryLaiofthe

UniversityofWashingtonintheU.S.andDr.LennartHardellofUniversityHospitalinSweden,wroteinanarticleinJAMA."

Muchhastobedonetofurtherinvestigateandunderstandtheseeffects."

Theywrote.

第1题Accordingtothepassage,whichofthefollowingisTRUE?

A.Cellphoneuseisdangerous.

B.Cellphoneusecausescancer.

C.Thehumanbrainisanelectromagneticfield.

D.Thereareabout5billioncellphoneusersintheworldrightnow.

答案：

D

第2题DoctorVolkowwasastonishedbecause_______.

A.herresearchhasshedlightonherunderstandingofcellphone

B.shefoundthatcellphoneexposureisharmfultohumanbrain

C.shefoundthatusingacellphoneforabout50minutescouldinfluenceorchangebrainactivity

D.humanbrainisnotresponsivetoelectromagneticradiation

C

第3题Accordingtothepassage,cellphoneswerelaunched_______.

A.inthelate1970sB.between1980and1985

C.inthelate1980sD.intheearly1990s

B

第4题Whatdoestheword"

that"

standforinthesecondparagraph?

A.Brainactivity.B.Herresearchfindings.

C.Thefactthatcellphoneusemaycausecancer.D.Herresearchprogress.

第5题Whichofthefollowingisanappropriatetitleforthispassage?

A.CellPhoneRadiation:

IsItHarmful?

B.CellPhoneRadiation:

IsItUseful?

C.CellPhoneRadiation:

IsItHealthy?

D.CellPhoneRadiation:

IsItWeak?

A

Humanbeingshavealwayshadanabilitytoattendtoseveralthingsatonce.（78）Noriselectronicmultitaskingentirelynew:

We'

vebeendrivingwhilelisteningtocarradiossincetheybecamepopularinthe1930s.ButthereisnodoubtthatmultitaskinghasreachedakindofwarpspeedintheeraofWeb-enabledcomputers,whenithasbecomeroutinetoconductseveralIM（即时通讯）conversations,watchTVandusethecomputerallatonce.

Butwhat'

stheimpactofthismediaconsumption?

Andhowarethesemultitaskingdeviceschanginghowkidslearn,reasonandcommunicatewithoneanother?

Socialscientistsandeducatorsarejustbeginningtodealwiththesequestions,buttheresearchersalreadyhavesomestrongopinions.

（79）Althoughmultitaskingkidsmaybebetterpreparedinsomewaysfortoday'

sfast-pacedworkplaces,manyscientistsarepositivelyalarmedbythetrend.Kidsthatareinstantmessagingwhiledoinghomework,playinggamesonlineandwatchingTV,aren'

tgoingtodowellinthelongrun.

Onthepositiveside,multitaskingstudentstendtobeextraordinarilygoodatfindingandusinginformation.Andprobablybecausemodernchildhoodcentersaro