2022-2023年江西省鷹潭市大學(xué)英語(yǔ)6級(jí)大學(xué)英語(yǔ)六級(jí)真題一卷(含答案)

2022-2023年江西省鷹潭市大學(xué)英語(yǔ)6級(jí)大學(xué)英語(yǔ)六級(jí)真題一卷(含答案)學(xué)校:________班級(jí):________姓名:________考號(hào):________

一、2.ReadingComprehension(SkimmingandScanning)(20題)1.

Calcium-richfood______itssupplementsbecauseitalsoprovidesothernutrientslikevitaminDandotherminerals.

2.

Thesecondhypothesisconcerningthe"mapping"abilityofbirdsproposesanideathatbirdsmaybeabletoextractlatitudeandlongitudefrom______.

3.

TheUnitedStatesmadeamistakeonthedetailsof______.

4.

Inthehappinesspiechart,errorfactorsaccountfor10percent.

A.YB.NC.NG

5.

Differentfromanimals,thetreesinfluencetheearth'satmosphereby______.

A.expellingcarbondioxidefromtheirleaves

B.expellingoxygenfromtheirleaves

C.directlyreducetheblanketofgases

D.turningsomecarbondioxideintolignin

6.

Ifyouhaveanyconcernaboutanewdrugoritssideeffects,youcanaskyourdoctororpharmacistquestions,orcallthedrugcompanyfor______.

7.

TheresearchershadtakentheThaitrialtobemoreeffectiveby______.

A.injectingonevaccinefortheimmunesystem

B.injectingtwovaccinestoboosttheresponses

C.injectingonevaccinefortheimmunesystemandanothertoboosttheresponses

D.puttingthreesyntheticHIVgenesintothebody

8.

IndiaandTailandalsohavesizableChinesecommunities.

A.YB.NC.NG

9.

Playingintheathleticfields,childrenstillneed______sothattheplaytimecanbemoreeffectiveandproductive.

10.Itfoundthatincreasesinairpollutiontendedto______.

11.

Chantek,the"orangutanperson",signs"tomatotoothpaste"and"eyedrink"for______respectively.

12.

Atlast,Sam'sappleisputintheashtrayonthedeskintheinterviewroom.

A.YB.NC.NG

13.

Visitorsareallowedto______.

14.

FreudlearnedfromChareoteverythingheneededtoknowabouthowtocurementallyillpatients.

A.YB.NC.NG

15.

Roboticsurgeryhaslessbloodlossandpain,lowerriskofcomplications,shorterhospitalstaysandquickerrecoverytimesthanthosewhohaveopensurgery.

A.YB.NC.NG

16.Whenyougotoacompanyforaninterview,thereisnoneedtocarethefeelingsofthereceptionists.

17.

Hayhasfoundthatboth______andsocialfactorscombinetoputtwinsatadisadvantage.

18.

Nearlyallthefamiliescanmanagetomeetthesoaringtuitioncoststhroughvariousinvestmentplans.

A.YB.NC.NG

19.

IfGoogleassuresprivacybydestroyinguserdata,thiswouldnegativelyinfluenceits______.

20.

Theroleascaregiverbroughtabouta______inconfidencetoMr.Rappaport.AfterreturningfromCalifornia,hefeltrenewed.

二、3.ListeningComprehension(20題)21.SectionA

Directions:Inthissection,youwillhear8shortconversationsand2longconversations.Attheendofeachconversation,oneormorequestionswillbeaskedaboutwhatwassaid.Boththeconversationandthequestionswillbespokenonlyonce.Aftereachquestiontherewillbeapause.Duringthepause,youmustreadthefourchoicesmarkedA,B,CandD,anddecidewhichisthebestanswer.

(12)

A.Thewomanmaytakethenexttrainaswell.

B.Thewomanhasbeenlateforthetrainforonehour.

C.Someonegavethewronginformationtothewoman.

D.Thewomanshouldwaitpatientlyuntilhegotaschedule.

22.(36)

A.Allthetime.

B.Formostoftheyear.

C.Inthesummermonths.

D.Foraminimumofsixmonthsofeachyear.

23.聽力原文：M:HowlongcanIkeepthebook?

W:Threeweeks,butyoucanrenewitifyouneeditforalongertime.

Q:WhatisthepossiblerelationshipbetweentheSpeakers?

(13)

A.Professorandstudent.

B.Shopassistantandcustomer.

C.Librarianandreader.

D.Twofriends.

24.(24)

A.Someonewhoisjustoutofuniversitywithexaggeratedideasofhisownimportance.

B.Someonewholooksattheclockallthetime.

C.Someonewhoissingleandhasplentyofambition.

D.Someonewhotalkslikeagutter.

25.聽力原文：W.Youdon'tseementhusiasticabouttheplay?

M:Youmustbejoking,IfIhadapplaudedanyharder,I'dhavebrokenmyhand.

Q:Whatdidthemanthinkoftheplay?

(15)

A.Itwasbadlyperformed.

B.Helikeditverymuch.

C.Theactorswereenthusiastic.

D.Itwasfunny.

26.

【B5】

27.(22)

A.Hethinksthedepartmenthasmisjudgedtheweathersituationfortheday.

B.Hedismissestheideaofhavinganannualpicnicassilly.

C.Helikespre-arrangedactivitiesandwouldrathergosomewhereonhisown.

D.Heprefershavingalittledozebeforedrinking.

28.(14)

A.Presentanewtheorytotheclass.

B.Readmorethanonearticle.

C.Readthebookmorethoroughly.

D.Writeabetterarticlefortheclass.

29.

【B2】

30.(21)

A.Shedidn'tyieldtochildrencrossingtheroad.

B.Sheparkedillegallyneartheschool.

C.Sheexceededthespeedlimit.

D.Shewasdrunk-driving.

31.聽力原文：W:DoyouwanttogoonatripwithustoFloridathisspring?Itwillcostabout300dollarsaperson.

M:300dollars?DoyouthinkIlustinheritedafortune?

Q:Whatcanbeinferredabouttheman?

(15)

A.Heisfortunatetohavemadealotofmoney.

B.Hisluckhasbeengood.

C.Hecan'taffordtospendthatmuch.

D.Hedoesn'tbelievethreehundreddollarswillbeenough.

32.(13)

A.Drivingacar.

B.Takingataxi.

C.Goingbytrain.

D.Takingthesubway.

33.(16)

A.Hedoesn'tgoonadietrecently.

B.Heusuallytakeshisweighttowork.

C.Hehasputonmuchweight.

D.Heeatschocolatetimeandagain.

34.聽力原文：W:It'snotsoeasytogetalongwellwithelderlyrelatives.Myaunthatesnoiseandspicyfoodsomuch.WhatcanIdo?

M:Shealsoteachesyousewingandgardening,doesn'tshe?

Q:Whatdoesthemanimply?

(19)

A.Thewoman'selderlyauntisn'teasy-going.

B.Thewoman'selderlyaunthatesnoisebutlikesketchup.

C.Thewomanhadbetteradjustherattitudetowardsthematter.

D.Thewomanhadbettersendheraunttosomeotherplacetolive.

35.聽力原文：W:Hello,nicetomeetyou,Dr.Griffin.I'mNancyWangwithChinaDaily.

M:Nicetomeetyou,MissWang.I'vebeentoChinatwice.

W:Really?When?

M:IvisitedChinafirstin1996andthenin2000.IbelieveeveryonewhobasbeentoChinaisimpressedwiththedramaticchangesthere.

W:Thankyou,Dr.Griffin.Ihearditisyourinstitutethatfirstclonedanadultmammal—DollythesheepinJuly1996.

M:That'sright.Eversinceitwasborn,Dollyhasbeenthecenterofattentionbecauseitsappearancemarkedthebeginningofanewera.

W:It'sreportedthatDollygavebirthtoalambinAprillastyear.HowareDollyandthelittlelambdoing?

M:ThelambiscalledBonnie.TheyarebothdoingWell.ThishasprovedthatDolly,aclonedanimal,isabletobreednormallyandproducehealthyoffspring.

W:Itisindeedexciting.WillDollygivebirthagain?

M:Shehasalready.OnMarch24thisyear,Dollygavebirthtothreehealthylambs,twomalesandonefemale.

W:lesincredible!Dollymusthavemadeworldheadlinesagain!

M:Thishasfurtherdemonstratedthatclonedanimalscanleadanormallife.

W:Howwillhumanbeingsbenefitfromthisnewprogressinscience?

M:Dollyandheroffspringarepartofaresearchprogramaimedtoproducetreatmentforakindofchroniclungdisease.

W:IWishyousuccess,Dr.Griffin!

M:Thankyou,MissWang.

(20)

A.Aprilthisyear,3.

B.Marchthisyear,3.

C.Aprilthisyear,4.

D.Marchthisyear,4.

36.聽力原文：Therearedesertsallovertheworld.OverhalfofAfricaisdesertland.TherearedesertsinChinaandLatinAmericaaswell.TheUnitedStateshasdesertsinthesouthwestpartofthecountry.Insomeplaces,desertsaregrowing.Thisisaseriousproblem.Desertsdestroyfarmland.Theyalsoruinlandwhereanimalslive.Whenpeoplecannotgrowfoodorfindanimalstoeat,[33]theyhavetoleavetheirhomes.

Desertsspreadfordifferentreasons.Sometimesnaturecausesthisproblem.Windcanmovesandawayfromdesertsandontousefulland.Whenthereisnorainforalongtimemanyplantscandie.However,humanscanalsocausedesertstogrow.Thisiscalleddesertification.Thishappensinmanyways.[34]Onewayiswhenpeoplecausetopmuchairpollution,whichcanmakeanareahotter:Hotterweathercanreducetheamountofrain.Also,toomanypeopleinoneareacandamagetheland.Especiallyiftheyhavemanyanimals,theiranimalscanalsoharmtheland.Whenlargeanimalslikecowswalkonsoiltoomuch,theyturnitintodust.Thewindeasilyblowsthisdustaway.Treeshelpholdwaterintheground.Whenpeoplecutdowntoomanytrees,thewatergoesawayandthesoilisruined.Plantsmaystopgrowingintheseplaces.Allofthesethingscanspeedupdesertification.Tostopdesertsfromgrowing,peoplemustthinkofwaystotreatthelandbetter.

(30)

A.Theyconvertfarmlandintowetland.

B.Theyreducetheamountofrain.

C.Theyforcepeopletoleavetheirhomes.

D.Theyspreadinanuncontrollablespeed.

37.SectionB

Directions:Inthissection,youwillhear3shortpassages.Attheendofeachpassage,youwillhearsomequestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA,B,CandD.

聽力原文：Adventuretravelisverypopulartodaywithpeopleofallages.Inadventuretravel,peopledooutdooractivitiesinfarawayplaces.Therearetwotypesofadventuretravel.Softadventuretravelincludesmildphysicalactivity,whichisfairlysafe.Fishing,hiking,birdwatching,andtrailridingareexamplesofsoftadventure.Hardadventuretravelincludesmoredifficultphysicalactivity.Itisalsomoredangerous.Youneedtoprepareandtrainyourbodyforahardadventure.Someexamplesofthiskindofadventuretravelarewhite-waterraftingandmountainclimbing.

Whyarepeopleinterestedinadventuretravelnow?Onereasonisanewinterestinnatureandoutdoors.Morepeoplewholiveincitiesnowoftendon'twanttospendtheirvacationsvisitingothercities,nomatterhowfamoustheyare.Peoplecanusuallyvisitcitiesandcommontouristsitesontheirown.Adventuretravelofferstheopportunityforexciting,newexperiences,allwiththehelpofexperiencedguides.

Communitiesallovertheworldaretakingadvantageofthenewinterestinadventuretravel.Smalltownsthathadnothingtooffertouristsbeforearenowpromotinghikingtours,rockclimbing,andcanoeridesdownrivers.There'sadventurewaitingforeveryone...somewhere.

(27)

A.It'squitenewadventuretravel.

B.It'sverydangerousadventuretravel.

C.It'squitesafeadventuretravel.

D.It'straditionaladventuretravel.

38.(25)

A.Herphonenumber.

B.Thelocationoftheapartment.

C.Thebesttimetocallher.

D.Herfirstname.

39.SectionC

Directions:Inthissection,youwillhearapassagethreetimes.Whenthepassageisreadforthefirsttime,youshouldlistencarefullyforitsgeneralidea.Whenthepassageisreadforthesecondtime,youarerequiredtofillintheblanksnumberedfrom36to43withtheexactwordsyouhavejustheard.Forblanksnumberedfrom44to46youarerequiredtofillinthemissinginformation.Fortheseblanks,youcaneitherusetheexactwordsyouhavejustheardorwritedownthe

Exceptionalchildrenaredifferentinsomesignificantwayfromothersofthesameage.Forthesechildrentodeveloptheirfulladult(36)______,theireducationmustbe(37)______tothosedifferences.

Althoughwefocusontheneedsofexceptionalchildren,wefindourselves(38)______theirenvironmentaswell.Boththefamilyandthesocietyinwhichexceptionalchildrenliveareoftenthekeytotheirgrowthanddevelopment.Anditisinthepublicschoolsthatwefindthefull(39)______ofsociety'sunderstanding—theknowledge,hopes,andfearsthatare(40)______ontothenextgeneration.

Educationinanysocietyisamirrorofthatsociety.Inthatmirrorwecanseethestrengths,theweaknesses,thehopes,the(41)______,andthecentralvaluesofthecultureitself.Thegreatinterestinexceptionalchildrenshowninpubliceducationoverthepastthreedecades(42)______thestrongfeelinginoursocietythatallcitizens,whatevertheirspecialconditions,(43)______theopportunitytofullydeveloptheircapabilities.

"Allmenarecreatedequal."We'vehearditmanytimes,butitstillhasimportantmeaningforeducationinademocraticsociety.(44)____________Thatconceptimplieseducationalopportunityforallchildren—(45)____________.Recentcourtdecisionshaveconfirmedtherightofallchildrentoanappropriateeducation,(46)____________.Inresponse,schoolsaremodifyingtheirprograms,adaptinginstructiontochildrenwhoareexceptional,tothosewhocannotprofitsubstantiallyfromregularprograms.

40.SectionC

Directions:Inthissection,youwillhearapassagethreetimes.Whenthepassageisreadforthefirsttime,youshouldlistencarefullyforitsgeneralidea.Whenthepassageisreadforthesecondtime,youarerequiredtofillintheblanksnumberedfrom36to43withtheexactwordsyouhavejustheard.Forblanksnumberedfrom44to46youarerequiredtofillinthemissinginformation.Fortheseblanks,youcaneitherusetheexactwordsyouhavejustheardorwritedownthe

Itisnoaccidentthatmoreandmorepeopleareeducatingtheirchildrenathome.HomeschoolingintheUnitedStatesisnolongeran【B1】______orunorganizedmovement.Today'sschoolsanddaycarecentersareinserioustrouble,despitethemany【B2】______individualswhoteachinpublicschoolsorwhocareforchildren.Fewerandfewerchildrenarereceivingthe【B3】______attention,values,andskillstheyneedinorderto【B4】______.Tiedtogetherwiththisisthefactthatmanychildrentodayspendverylittle【B5】______timewiththeirparents.Familylifeisfastbecoming【B6】______.Homeschoolingisanattempttoreturnthefamilytochildren--thechildrenwho【B7】______longforthelovingauthoritythatonlyparentscangive,thechildrenwhowillnotresenttheirparents'【B8】______andcorrection.

Therearemanygoodreasonswhyparentshome-schooltheirchildren.【B9】______.Somecoupleshome-schoolforreligiousandmoralreasons.【B10】______.Somecoupleshome-schoolsimplytosolidifytheirownsenseoffamilytogetherness.【B11】______.Thesereasons--andtherearesurelymanyothers--arebothunderstandableandjustified.

【B1】

三、4.ReadingComprehension(ReadinginDepth)(20題)41.

Whatdoestheword"dermatologist"(Line2,Para.2)mean?

A.Apersonwhoseworkisfilling,cleaningandtakingoutteeth.

B.Apersonwhoseworkisstudyingmentaldiseases.

C.Apersonwhoseworkishealingeyediseases.

D.Apersonwhoseworkiscuringskindiseases.

42.

【C10】

43.SectionB

Directions:Thereare2passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA,B,CandD.Youshoulddecideonthebestchoice.

Whenweworryaboutwhomightbespyingonourprivatelives,weusuallythinkabouttheFederalagents.Buttheprivatesectoroutdoesthegovernmenteverytime.It'sLindaTripp,nottheFBI,whoisfacingchargesunderMaryland'slawsagainstsecrettelephonetaping.It'sourbanksnottheInternalRevenueService(IRS),thatpassourprivatefinancialdatatotelemarketingfirms.

ConsumeractivistsarepressingCongressforbetterprivacylawswithoutmuchresultsofar.Thelegislatorsleantowardlettingbusinesspeopletrackourfinancialhabitsvirtuallyatwill.

Asanexampleofwhat'sgoingon,considerU.S.Bancorp,whichwasrecentlysuedfordeceptivepracticesbythestateofMinnesota.Accordingtothelawsuit,thebanksuppliedatelemarketercalledMemberWorkswithsensitivecustomerdatasuchasnames,phonenumbers,bank-accountandcreditcardnumbers,SocialSecuritynumbers,accountbalancesandcreditlimits.

Withthesecustomerlistsinhand,MemberWorksstarteddialingfordollars-sellingdentalplans,videogames,computersoftwareandotherproductsandservices.Customerswhoaccepteda"freetrialoffer"had30daystocancel.Ifthedeadlinepassed,theywerechargedautomaticallythroughtheirbankorcreditcardaccounts.U.S.Bancorpcollectedashareoftherevenues.

Customersweredoublydeceived,thelawsuitclaims.Theydidn'tknowthatthebankwasgivingaccountnumberstoMemberWorks.Andifcustomersasked,theywereledtothinktheanswerwasno.

ThestatesuedMemberWorksseparatelyfordeceptiveselling.TheCompanydeniesthatitdidanythingwrong.Foritspart,U.S.Bancorpsettledwithoutadmittinganymistakes.Butitagreedtostopexposingitscustomerstononfinancialproductssoldbyoutsidefirms.Afewtopbanksdecidedtodothesame.ManyotherbankswillstilldobusinesswithMemberWorksandsimilarfirms.

Andbankswillstillbeminingdatafromyouraccountinordertosellyoufinancialproducts,includingthingsoflittlevalue,suchascreditinsuranceandcredit-cardprotectionplans.

Youhavealmostnoprotectionfrombusinessesthatuseyourpersonalaccountsforprofit.Forexample,nofederallawshields"transactionandexperience"information-mainlythedetailsofyourbankandcredit-cardaccounts.SocialSecuritynumbersareforsalebyprivatefirms.They'vegenerallyagreednottoselltothepublic.Buttobusinesses,thenumbersareanopenbook.Self-regulationdoesn'twork.Afirmmightpublishaprivacy-protectionpolicy,butwhoenforcesit?

TakeU.S.Bancorpagain.Customersweretold,inwriting,that"allpersonalinformationyousupplytouswillbeconsideredconfidential."ThenitsoldyourdatatoMemberWorks.Thebankevenclaimsthatitdoesn't"sell"yourdataatall.Itmerely"shares"itandreapsaprofit.Nowyouknow.

Contrarytopopularbelief,theauthorfindsthatspyingonpeople'sprivacy______.

A.ismainlycarriedoutbymeanso{secrettaping

B.hasbeenintensifiedwiththehelpoftheIRS

C.ispracticedexclusivelybytheFBI

D.ismoreprevalentinbusinesscircles

44.SectionA

Directions:Inthissection,thereisashortpassagewith5questionsorincompletestatements.Readthepassagecarefully.Thenanswerthequestionsorcompletethestatementsinthefewestpossiblewords.

ManyoftheworkerswhoservedattheWorldTradeCenteraftertheSeptembereleventhattacksbecamesick.Theybreathedaharmfulmixofdust,smokeandchemicalsintheruinsoftheTwinTowersandathirdbuildingthatfell.Somewentclayswithoutgoodprotectionfortheirlungs.Fiveyearslater,manyofthethousandswhoworkedatGroundZerointheearlydaysaftertheattacksstillhavehealthproblems.

DoctorsatMountSinaiMedicalCenterinNewYorkCityhaveannouncedtheresultsofthelargeststudyoftheseworkers.Thestudyconfirmedhighratesofbreathingproblemsinmembersofthebuildingtrades,firefighters,policeofficersandotherworkers.Almostseventypercentoftheworkersinthestudyhadaneworworsenedbreathingproblem.Theseproblemsdevelopedduringoraftertheirtimeworkinginthemountainofwreckage.Aboutsixtypercentstillhadbreathingproblemsatthetimeoftheirexamination.Theresearcherssaytheydecidedtostudytheeffectsonbreathingfirstbecauseotherdisordersmightbeslowertoappear.MountSinaisaysittestedalmosttwelvethousandpeoplebetweentwothousandtwoandtwothousandfour.Eightoutoftenofthemagreedtohavetheirresultsusedinthereport.ThenewresultsaddedstrengthtoaMountSinaistudyreleasedintwothousandfour.Thatstudywasbasedononlyaboutonethousandworkers.

SomelawmakershavesharplycriticizedcityandstateofficialsforlettingworkerslaboratGroundZerowithoutsatisfactoryequipment.Officialshavealsobeencriticizedforsayingtheairwasrelativelysafe.Stateandfederalofficialshavepromisedmorethanfiftymilliondollarstopayfortreatmentoftheworkers.DoctorRobinHerbertisoneofthedirectorsoftheMountSinaitestingprogram.ShesayspeoplearestillcomingtothehospitalfortreatmentofproblemsthatwerecausedbythedustatGroundZero.Inherwords:"Myworryisthatmoneywillbegoneinayear,andwhathappensthen?"

WhatcausedthehealthproblemstoworkersaftertheSeptembereleventhattacksaccordingtothispassage?

45.

Students'immediatemissioninlifeis______.

46.【S2】

47.

Whatpossiblyresultedintheevolutionfromleaflesstreetoflatleaves?

A.ThedecreaseCO2inlevels.

B.Theincreaseofforests.

C.Thedropoftemperatures.

D.Thechangeofclimatesliketoday.

48.

Accordingtothe9thparagraph,arealityshowismostlikelytobesuccessfulif______.

A.itisanewunprecedentedprogram

B.itisatried-and-trueconcept

C.itisadecades-oldformat

D.itisahotspotissue

49.

Aftersomeanalysisandcomparisonwork,scientistsbecamesurethatSkhulshellscouldbeover______.

50.Itmaybethelastbookyou'lleverbuy.Andcertainly,fromapracticalstandpoint,itwillbetheonlybookyou'lleverneed.No.It'snottheBibleorsomeNewAgetomepromisingenlightenment—althoughitwouldletyoucarryaroundbothtextssimultaneously.It'sanelectronicbook—asinglevolumethatcouldcontainalibraryofinformationor,ifyourtastesruntowardwhat'scurrent,everytitleontoday'sbest-sellerlist.Andwhenyou'reclonewiththose,youcouldrefillitwithnewtitles.

Whyanelectronicbook?Computerscanstoreatonofdataandtheirlaptopcompanionsmakeallthatinformationportable.Trueenough.Butlaptops(便攜式電腦)andsimilarportableinformationdevicesrequirealotofpowerandheavybatteriestokeeptheirLCDscreensoperating.AndLCDsarenoteasytoreadinthebrightlightofthesun.

Factis,whenitcomestoportability,easyviewing,andlowpowerrequirements,it'shardtobeatplainoldpaper.

Solet'smaketheinkelectronic.

That'sthedeceptivelysimplepremisebehindaprojectcurrentlycomingtofruitionattheMassachusettsInstituteofTechnology.Somehurdlesmostlyhavingtodowithlarge-scalemanufacturingremain,soitwillbeafewyearsbeforeyouseeanelectronicbookforsaleinstores.Butthebasictechnologyalreadyexists,developedattheInstitute'sMediaLabbyateamledbyphysicistJoeJacobson.

Thankstoelectronicink,thebookessentiallytypesetsitself,receivinginstructionsforeachpageviaelectronicshousedinthespine.Fromapowerstandpoint,thisprocessmakestheelectronicbookveryefficient.UnlikeanLCDscreen,whichusespowerallthetime,energyisnolongerneededtoviewtheelectronicbook'spagesoncetheyaretypeset.Onlyasmallbatterywouldberequired,asopposedtothelargeonesneededtopowerlaptopcomputersandtheirLCDs.

Convenience,though,isstillthemainattraction—andthatmeansmorethansimpleportability.Becausetheinformationisinelectronicform,itcanbeeasilymanipulated.

Jacobsonthinksanelectronicbookwillbeaffordablearound$200forabasicread-onlymodeltoabout$400foronethatwouldrecordyourmarginscribbles.Somehurdlesremain,though,beforeyoucantakeanelectronicbookwithyouanywhere.Paperisproducedinlongsheets,andJacobsonisstillworkingonthebestmethodtointegrateelectronicinkintothatprocess.Toavoidhavingtousethousandsoftinywiresoneachpage,theinkitselfmustbeconductive.Suchinkwasrecentlydemonstratedinthelabbuthasyettobeproducedinvolume."Essentially,"notesJacobson,"We'retryingtoprintchips."

Jacobsonisconfident,however,thatthiscanbedoneonalargescale.IfJacobsonsucceeds,hewillhavemadethebookforthe21stcentury.

Accordingtothepassage,whichbookistheonlybookyou'lleverneed?

A.AmericanslikesportsandsportsrevealmuchaboutthechangingethnicstructureoftheUnitedStates

B.Asinglevolume.

C.NewAgetome.

D.Anelectronicbook.

51.

Fromthequotedwordsinthebeginningofparagraph3,wecanjudgethatuniversitytutorsare______.

52.

【C8】

53.

【C3】

54.AcrosstheUnitedStates,scientistsaremountingwhatmaybecomethemostinnovativeagriculturalresearchdrivesincethe1920's,whenhybridcornwasdeveloped.Surprisingly,thenewgeneticrevolutionisnottakingplaceinAmerica'sfields.Instead,itisoccurringinbiologylaboratories,foritinvolvesthedeliberatemanipulationintesttubesofthegenesofcropplants.Thisgeneticengineeringmayprovethebiggestboontoagriculturesinceplantbreedingbegan.

Thenewconceptsgrewoutofthebioengineeringofbacteriafortheproductionofsuchthingsashumanhormonesandvaccinesforviraldiseases.Plantcells,however,arefarmorecomplexthanbacteria,anditwillprobablytakemanyyearsfortoday'sencouraginglaboratoryresultstohaveamajorimpactonthefarm.Infactthepayoffmaynotcomeuntilthenextcentury.

Butalthoughbio-technologistsarestillintheearliestphasesofthisnewfieldofscience,theyarealreadyactivelyexploringwaystoredesignplantssotheywillusesunlightmereefficiently,resistvirusesandotherpests,growinhotordryareas,insalinesoilsorinthepresenceofpesticides,andperhapsevenmaketheirownfertilizeroutofnitrogenintheair.Inaddition,scientistshavehadearlysuccessinmakingwhollynewplantsthatareunavailablebyconventionalplantbreeding-apotato-tomatocombination,forexample.

Thenewtechnologyholdsthepromiseofvirtuallylimitlesshorizonsinfoodproduction.Onlyimaginationsetsthelimits:frost-resistantwheat,tropicalpotatoes,saltwaterrice,aplantproducingacombinationofapeaandacarrot-allmaybewithusoneday.

Vaccinesforviraldiseasesareoftenproducedfrom______.

A.plantcellsB.humanhormonesC.cropplantsD.bacteria

55.

【C6】

56.

theoryisusedfrequentlytointerpretlight.

57.Lifeonearthdependsonwater,andthereisnosubstituteforit.Thecurrentassumptionisthatourbasicneedsforwater-whetherfordrinking,agriculture,industryortheraisingoffish-willalwayshavetobemet.Giventhatpremise,therearetwobasicrouteswecango:moreequitable(平衡的)accesstowaterormoredrasticengineeringsolutions.

Lookingattheengineeringsolutionfirst,alotofmyresearchconcentratesonwhathappenstowetlandswhenyoubuilddamsinriverbasins,particularlyinAfrica.Theecologyofsuchareasisalmostentirelydrivenbytheseasonalregimeoftheriver—thepulseofthewater.Andthefactisthatifyoubuildadam,yougenerallywreckthedownstreamecology.Inthepast,suchproblemshavebeenhiddenbyalackofinformation.Butinthiscentury,g