阅读理解的背景 文章分类 范文文档格式.docx

阅读理解的背景 文章分类 范文文档格式.docx

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D.theyfindthepositionmostcomfortable 

02.Theword"

they"

inthelastsentenceofthefirstparagraphrefersto_______. 

A.birdsandparasites 

B.birdsandsheep 

C.sheepandparasites 

D.sheep,birdsandparasites 

03.Fromthepassageweknowthatthecoralisakindof________. 

A.plantthatneedsoxygen 

B.plantthatcanproduceoxygen 

C.animalthatneedsoxygen 

D.animalthatcanproduceoxygen 

04.Whatdoesthesecondparagraphmainlydiscuss?

A.Someanimalsandplantsdependoneachotherforliving. 

B.Someanimalsandplantsdeveloptheirrelationshipeasily. 

C.Someplantsdependoneachotherforfood. 

D.Someanimalslivebettertogether. 

02

Theideaoffightinganoisebymakingmorenoisesoundsstrange,butthat'

sexactlywhatmotorengineersaredoinginGermanyandsomeothercountries.

Carmakers'

researchanddevelopmentlaboratorieshavealreadyprovedthatmixinginmorenoisewiththehelpofloudspeakerscanreducetheunwantednoise.

Physicistshaveknownaboutthetechniqueforalongtime.Soundismadeupofpressurewavesintheair.Iftwosoundwavesofthesamefrequency（频率）mixsothatthehighestpointofonewavehappensatthesametimewiththelowestpointoftheotherwave,theresultisnosound.Therefore,byproducingaperfectcopyofthenoiseanddelayingitbyhalfawavecycle（周期）,wecankilltheunwantednoise.Usingthistechniquemanycarmakersareracingtodevelopnoise-killingsystemsbothinsideandoutsidethecars.

Anothergoodthingabouttheuseofnoise-killingsystemsisthatitsavestheneedforasilencer,whichnotonlyreducestheweightofacar,butalsomakesthemotorburnlessoilandworkbetter.

Someengineersbelievethatthenoise-killingsystemwillbeusedinmostcarsin1996.Butthecarmakershaven'

tdecidediftheywillputitintoproductionbecauseitwouldaddseveralhundreddollarstothecostoftheircars.

1.Whichofthefollowinggivesageneralideaofhowthenoise-killingsystemworks?

A.Byproducingpressurewavesgoingintheoppositedirection.

B.Bymixinghighfrequencysoundwaveswithlowfrequencysoundwaves.

C.Bymakingcopiesoftheunwantedsoundwavesandlettingthemoutalittlelater.

D.Bymixingnewsoundwaveswiththenoiseandsendingthemouttogether.

2.Besidesitsmainfunction（功能）thenoise-killingsystemcan.

A.makeacarlighter

B.makeacarquieter

C.reducethecostofasilencer

D.improvetheperformanceofasilencer

3.Thenoise-killingsystemisnotyetpopularmainlybecause.

A.itincreasesthecostofcarproduction

B.carmakersarenotsureifitisnecessary

C.itisstillbeingtriedout

D.peoplestillhavetheirdoubts

03

Fatonhumanbeingsisdistributed（分布）indifferentways.Somefatpeoplehavealargestomachandnowaistline-whichmakesthemlookround,ratherlikeapples.Othersarefatterbelowthewaist,whichmakesthemappearpear-shaped（梨形的）.

Therearetwotypesoffat:

externalfat（fatundertheskin）andinternalfat（fatinsidethebodywall）.Doctors,whohavebeenexaminingtherelationshipbetweenhealthandfatness,havefoundthatthe‘pears'

havelessinternalfat,butthe‘apples'

havemoreinternalfatthanexternalfat.Thisseemstobewhatcausesthehealthproblems.

Thebesttreatmentforfatnessistoreducetheinternalfat.Butunfortunatelyitseemsthatdieting（节食）simplymakesanapple-shapedpersonintoasmallerappleandapear-shapedpersonintoasmallerpear.Atthemomentthereisnoknownwayofreducingtheinternalratherthanexternalfat.

1.Thetextismainlyabout________.

A.fatnessandhealthB.waystoloseweigh

C.people'

sfiguresD.distributionoffat

2.Whenapear-shapedpersonbecomesthinner,he/shelosesmore.

A.internalfatthanexternalfat

B.externalfatthaninternalfat

C.fatabovethewaist

D.fatbelowthewaist

04

Computerpeopletalkalotabouttheneedforotherpeopletobecome"

computer-literate"

inotherwords,tolearntounderstandcomputersandwhatmakesthemtick.Notallexpertsagree,however,thatisagoodidea.

Onepioneer,inparticular.whodisagreesisDavidTebbutt,thefounderofComputertownUK.Althoughmanypeopleseethisasasuccessfulattempttobringpeopleclosertothecomputer,Daviddoesnotseeitthatway.HesaysthatComputertownUKwasformedforjusttheoppositereason,tobringcomputerstothepeopleandmakethem"

people-literate"

.

　　DavidfirstgottheideawhenhevisitedoneofAmerica’sbest-knowncomputer"

guru"

figure,BobAlbrecht，inthesmalluniversitytownofPaloAltoinNorthernCalifornia.AlbrechthadstartedaprojectcalledComputertownUSAinthelocallibrary,andthelocalchildrenusedtocallroundeveryWednesdaytoborrowsometimeonthecomputersthere,insteadofborrowinglibrarybooks.Albrechtwasalwaysonhandtoansweranyquestionsandtohelpthechildrendiscoveraboutcomputersintheirownway.

　　Overhere,inBritain，Computertownshavetakenoffinabigway，andtherearenowabout40scatteredoverthecountry.DavidTebbuttthinkstheyaremostsuccessfulwhentiedtoacomputerclub.Heinsiststhereisavastandimportantdifferencebetweenthetwo,althoughtheycomplementeachother.Theclubscaterfortheenthusiasts,withsomecomputerknowledgealready,whogettogetherarideventuallyformanexpertcomputergroup.Thisfrightensawaynon-experts,whoarehappiergoingtoComputertownswheretherearecomputersavailableforthemtoexperimenton,withexpertsavailabletoencouragethemandansweranyquestions;

theyarenottoldwhattodo,theyfindout.

　　DavidTehbuttfindsitinterestingtoseethetwodifferentapproachesworkingsidebyside.Thecomputerexpertshavetolearnnottotellpeopleaboutcomputers,buthavetobeabletoexplaintheanswerstothequestionsthatpeoplereallywanttoknow.InsomeComputertownstherearequestionsessions,ratherlikeradiophone-ins,wheretheexpertslistentoalotofquestionsandthentrytoworkoutsomestructuretoanswerthem.Peoplearenothavingtolearncomputerjargons,buttheexpertsarehavingtotranslatecomputermysteriesintoeasilyunderstoodterms;

thecomputersarebecoming"

　　1.AccordingtoDavidTebbutt,thepurposeofComputertownUKisto___

　　A.trainpeopletounderstandhowcomputerswork

　　B.makemorecomputersavailabletopeople

　　C.enablemorepeopletofixcomputersthemselves

　　D.helppeoplefindoutmoreaboutcomputers

　　2.WeLearnfromthepassagethatComputertownUSAwasa___.

　　A.townB.projectC.libraryD.school

3.WhichofthefollowingstatementsisINCORRECT?

　　A.ComputertownsintheUKhavebecomepopular.

　　B.Computertownsandclubscaterfordifferentpeople.

　　C.Computertownsaremoresuccessfulthanclubs.

　　D.It’sbetterthatcomputertownsandclubsworktogether.

　　4.WhichofthefollowingisNOTanadvantageofcomputertowns?

　　A.Expertsgivelecturesandtalksoncomputers.

　　B.Expertsareonhandtoanswerpeople’squestions.

　　C.Peoplearelefttodiscovercomputersontheirown.

　　D.Therearecomputersaroundforpeopletopractiseon.

05

OlafStapledonwroteabookcalledFirstandLastMen,inwhichhelookedmillionsofyearsahead.Hetoldofdifferentmenandofstrangecivilizations,brokenupbylong'

darkages'

inbetween.Inhisview,whatiscalledthepresenttimeisnomorethanamomentinhumanhistoryandwearejusttheFirstMen.In2,000millionyearsfromnowtherewillbetheEighteenthorLastMen.

　However,mostofourideasaboutthefuturearereallyveryshort-sighted.Perhapswecanseesomepossibilitiesforthenextfiftyyears.Butthenexthundred?

Thenextthousand?

Thenextmillion?

That'

smuchmoredifficult.

　Whenmenandwomenlivedbyhunting50,000yearsago,howcouldtheyevenbegintopicturemodernlife?

Yettomenof50,000yearsfromnow,wemayseemasprimitiveinourideasastheStone-Agehuntersdotous.Perhapsthroughthespundelsandballalators,thesewords,whichIhavejustmadeup,havetostandforthingsandideasthatwesimplycan'

tthinkof.

Sowhybothereventotryimagininglifefarinthefuture?

Herearetworeasons.Firstunlesswerememberhowshortourownlivesarecomparedwiththewholehumanhistory,wearelikelytothinkourowninterestsaremuchmoreimportantthantheyreallyare.Ifwemaketheearthapoorplacetolive,becausewearecarelessorgreedyorquarrelsome,ourgrand-childrenwillnotbothertothinkofexcusesforus.

　Second,bytryingtoescapefrompresentinterestsandi