2026年全国成考（专升本）之英语（专升本）考试潜能激发题（附答案）

姓名:_________________编号:_________________地区:_________________省市:_________________ 密封线 姓名:_________________编号:_________________地区:_________________省市:_________________ 密封线 密封线 2026年成考（专升本）考试重点试题精编注意事项:1.全卷采用机器阅卷，请考生注意书写规范；考试时间为120分钟。2.在作答前，考生请将自己的学校、姓名、班级、准考证号涂写在试卷和答题卡规定位置。

3.部分必须使用2B铅笔填涂;非选择题部分必须使用黑色签字笔书写，字体工整，笔迹清楚。

4.请按照题号在答题卡上与题目对应的答题区域内规范作答，超出答题区域书写的答案无效:在草稿纸、试卷上答题无效。(参考答案和详细解析均在试卷末尾)一、选择题

1、Theeducationcommittee___hisproposalwithoutgivinghimanyreason.A.turnedupB.turneddownC.turnedoutD.turnedin

2、Climate,morethananyothersinglefactor,determinesthedistributionoflifeonearth.Climaticboundariesestablishthelimitswhichorganismscansurvive.Plants,evenmorethananimals,mustbewelladaptedtoclimateinordertosurvive.Theycannotmoveaboutortakeshelterbutmustbeequippedtoendurewhateverweatherconditionsarelikelytooccur.Intheharshconditionsofthetundra,forexample,lowgrowingmosses,lichens,andafewfloweringplantsallhugthegroundforshelterfromicywinds.Animal,despitetheirabilitytomoveaboutandfindshelter,arejustasmuchinfluencedbyclimateasplantsare.Creaturessuchasthecamelandthepenguinaresohighlyspecializedthattheyhaveanextremelylimiteddistribution.Others,suchasbearsareflexibleenoughtoadapttoabroadrangeofclimates.Oceandwellingorganismsarejustassensitivetoclimaticchanges--inthiscasetemperatureandsalinity--aslandanimals.Reefcoralscansurviveonlyinclearwarmseawater.Certainforaminifersaresosensitivetochangesintheirenvironmentthattheirpresencecanbetakenasanindexofseatemperature.Humanbeingsareamongtheleastspecializedofallanimalsandcanlivealmostanywhere.Theirclothesandtheirhomesactasasortof〝miniatureclimate"thatcanbetakenwiththemeverywhere.Accordingtothepassage,plantsonthetundragrowintheground____.（）A.toavoidbeingeatenbyarcticanimalsB.becausefertilizerisnotreadilyavailableC.tominimizeexposuretothecoldD.becauseunfrozenwatersuppliesareveryscarce

3、选出下列选项中读音不同的选项（）A.fullB.luckC.stuffD.up

4、Modernscienceandtechnologyhasshortenedthedistancebetweenpeopleandbroughtus________closer.A.mostB.muchC.tooD.very

5、PassageFourThediscoveryofadwarfed（矮个子）"humanbeing"wholivedinFlores,Indonesia,upto18,000yearsagoischangingthewaywethinkaboutthehumanfamily.This"FloresHuman"wasthreefoottallandherbrainwassmallerthanthatoftheaveragechimp（黑猩猩）,yetsheandherrelativesapparentlylivedfullyhumanlives.Theyseemtohavemadetools,workedtogethertofindfoodandcookit,andperhapsevenburriedtheirdeadwithceremony.Itwasamajorsurprisetofindtoolsassociatedwiththenewhumanfamilymember.ThetoolsarelikethoseformerlyseenonlywithEuropeanfossils（化石）fromourownspecies;Homosapiens（智人）;andtheoldestofthemweremade9,400yearsago.Homosapiensisthoughttohavearrivedintheislandabout4,000yearsago,muchtoolatetoberesponsibleforthetools.Ifthistinyhumanmadethetools,thentheinsidestructure（结构）ofitsbrainmusthavebeenmorelikeourownthanachimp′s,despitebeingjustathirdthesizeofours.This"newhuman"wassuspectedtobeadwarfedbranchofHomoerectus（直立人,）.Whencreaturesareseparatedinregionswithrareresourcesbutfewenemies,beingbigisadisadvantage,andevolutiontendstoshrinkthem,aprocessknownasislanddwarfing.Couldnaturalselectionmakeahumansmallerwhilekeeping--evenimproving--mentalability?Quitepossibly,believesChristopherWillsoftheUniversityofCalifornia.Hasthe"FloresHuman"evenshowntheabilityoflanguage?"Ifinditdifficulttoimaginethatpeoplecouldmaketools,usefire,andkilllargeanimalswithoutfairlyadvancedcommunication,"Willssays.Did"FloresHuman"possessthebasiccomponentsofhumanculture--suchastheburyingofthedeadwithceremony?EmilianoBruneroftheItalianInstitutepointsoutthatIndonesia′shot,wetenvironmentisbadforfossilization.Itisreasonabletoassume,hesays,thatthe18,000-year-oldbonesofthemostcompleteFloreswomanwerewell-preservedbecauseshewasburiedwithspecialcare.Accordingtothepassage,itisbelievedthat"FloresHuman"__A.wasdwarfedbyitsenemiesB.coulduselanguageC.leftalotoffossilsinthehotandwetenvironmentD.reachedFlores40,000yearsago

6、InBritain,peoplehavedifferentattitudestothepolice.Mostpeoplegenerally21themandthejobtheydo-althoughtherearecertainpeoplewhodonotbelievethatthepolice22havethepowerthattheydo.Whatdoesapolicemanactuallydo?Itisnot23jobtodescribe.Afterall,apolicemanhasanumberofjobsinone.Apolicemanoftenhastocontroltraffic,either24footinthecenterofatown,orinapolicecarontheroads,indeed,inBritain,hemightbeintheTrafficPoliceandspendall,oralotof,hittime25upanddownmainroadsandmotorways.Atrafficpolicemanhastohelpkeepthetrafficmoving,stop26motoristsandhelpwhenthereisanaccident.Apolicemanhastohelpkeepthe27,too.Ifthereisafightorsomeotherdisturbance,we28thepolicetocomeandrestoreorder.Andtheyoftenhavetodealwithsituationatgreatrisktotheirown29.Weexpectthepolicetosolvecrimes,ofcourse,soanordinarypoliceman,evenifheisnotadetective,willoftenhavetohelp30andarrestcriminals.And31dowecallwhenthereisanemergency--anaircrash,afire,aroadaccident,orarobbery?Wecallthepolice．32apolicemanhastobepreparedtofaceanyunpleasantemergencythatmayhappeninthe33world．Thepolicedoanabsolutelynecessaryjob,theydoit34wellandIsupportthem,butIdonotenvypoliceman.IdonotthinkthatIcould35dothejobofapoliceman.A.hardlyB.foreverC.everD.never

7、ManypeoplebelievethatAmericanslovetheircarsalmostmorethananythingelse.Theyare21aboutcars.Notonlyisthecarthe22meansoftransportationintheStates,ithas23becomea“plaything”.24thetimeyoungstersbecomefourteenyearsoldoreven25,they'relikelytostart26ofhavingtheirowncars.IntheUSA,the27family,ifthefatherisnot28work,canaffordtobuyanewcareveryfiveyears.However,manyyoungpeople29afterschoolinordertosavemoneytobuyacar.Learningtodriveandgettingadriverlicensemaybeoneofthemostexciting30ofayoungperson'slife.Driver31isoneofthemostpopularcourses.Attheendofthecoursethestudentwill32adrivingtestforalicense.33many,thatpieceofpapermeansthattheyhavegrownup.IntheUnitedStates,manymenandwomen34tohavecars.Peopleusecarstogotowork.35drivecarstogoshopping,totakethechildrentoschoolorforotheractivities.A.almostB.nearlyC.evenD.also

8、Lookingbackonmychildhood,Iamconvincedthatnaturalistsarebornandnotmade.Althoughwewerebroughtupinthesameway,mybrothersandsisterssoonabandonedtheirpressedflowersandinsects.Unlikethem,Ihadnoearformusicandlanguages.IwasnotanearlyreaderandIcouldnotdomentalarithmetic.BeforeWorldWarⅠwespentoursummerholidaysinHungary.Ihaveonlythedimmemoryofthehousewelivedin,ofmyroomandmytoys.NordoIrecallclearlythelargefamilyofgrandparents,aunts,unclesandcousinswhogatherednextdoor.ButIdohaveacrystalclearmemoryofthedogs,thefarmanimals,thelocalbirds,andaboveall,theinsects.Iamanaturalist,notascientist.Ihaveastrongloveofthenaturalworldandmyenthusiasmhadledmeintovariedinvestigations.Ilovediscussingmyfavoritetopicsandenjoyburningthemidnightoilwhilereadingaboutotherpeople'sobservationsanddiscoveries.Thensomethinghappensthatbringstheseobservationstogetherinmyconsciousmind.Suddenlyyoufancyyouseetheanswertotheriddle,becauseitallseemstofittogether.Thishasresultedinmypublishing300papers,andbooks,whichsomemighthonourwiththetitleofscientificresearch.Butcuriosityakeeneye,agoodmemoryandenjoymentoftheanimalandplantworlddonotmakeascientist:onetheoutstandingandessentialqualitiesrequiredisself-discipline,aqualityIlack.Ascientistrequiresnotonlyself-disciplinebuthardtraining,determinationandagoal.Ascientist,uptoapoint,canbemade.Anaturalistisborn.Ifyoucancombinethetwo,yougetthebestofbothworlds.Theauthorcan’trememberhisrelativesclearlybecause____.（）A.hewastooyoungwhenhelivedwiththemB.hewasfullyoccupiedwithobservingnatureC.hedidn’tliveverylongwiththemD.thefamilywasextremelylarge

9、Enoughsleepisimportanttohealth.Theamountofsleep21dependsontheageofthepersonandtheconditionsinwhichsleep22.Theyoungmayneedmoresleepthantheold,but23eighthoursisenoughforthehealthofgrown-ups.Somecandowithlessthanthisamountbut24mayneedmore.Everypersonknowshisownneed.Itisthenamatterofhowto25it.Sleepshouldbealwaysenoughtomakeonerelaxed(松弛)andreadyfor26work.Freshairis27tosoundsleep(酣睡).Itisnot28reasonforsomepeopletoinsistthatitispracticaltosleepintheopenair.29apersoncankeephimselfwarm,outof-doorsleepingprobablygivesthebody30completerelaxtion.Abilitytosleepislargelyahabit.Theconditionsreferredtoonlyleadtosleep.Out-of-door31,agoodhabitofregulardrinkingandtheavoidanceoflateeatingand32areallhelpfultosoundsleep.Suchfactorsarelargelywithinthe33ofanyperson.Abathat34,neitherhotnorcoldbutofbodytemperature,maybehelpfultosleep.Sleepingpillsshouldneverbetakenexceptwhensuggestedby35.A.fallsdownB.breaksoutC.wakesupD.takesplace

10、Enoughsleepisimportanttohealth.Theamountofsleep21dependsontheageofthepersonandtheconditionsinwhichsleep22.Theyoungmayneedmoresleepthantheold,but23eighthoursisenoughforthehealthofgrown-ups.Somecandowithlessthanthisamountbut24mayneedmore.Everypersonknowshisownneed.Itisthenamatterofhowto25it.Sleepshouldbealwaysenoughtomakeonerelaxed(松弛)andreadyfor26work.Freshairis27tosoundsleep(酣睡).Itisnot28reasonforsomepeopletoinsistthatitispracticaltosleepintheopenair.29apersoncankeephimselfwarm,outof-doorsleepingprobablygivesthebody30completerelaxtion.Abilitytosleepislargelyahabit.Theconditionsreferredtoonlyleadtosleep.Out-of-door31,agoodhabitofregulardrinkingandtheavoidanceoflateeatingand32areallhelpfultosoundsleep.Suchfactorsarelargelywithinthe33ofanyperson.Abathat34,neitherhotnorcoldbutofbodytemperature,maybehelpfultosleep.Sleepingpillsshouldneverbetakenexceptwhensuggestedby35.A.childrenB.womenC.manD.few

11、Oceanographyhasbeendefinedas“Theapplicationofallsciencestothestudyofthesea”.Beforethenineteenthcenturyscientists,withaninterestintheseawerefewandfarbetween.CertainlyNewtonconsideredsometheoreticalaspectsofitinhiswritings,buthewasreluctanttogotoseatofurtherhiswork.Formostpeopletheseawasremote,andwiththeexceptionofearlyintercontinentaltravelersorotherswhoearnedalivingfromthesea,therewaslittlereasontoaskmanyquestionsaboutit,letalonetoaskwhatlaybeneaththesurface.Thefirsttimethatthequestion"Whatisatthebottomoftheoceans?"hadtobeansweredwithanycommercialconsequencewaswhenthelayingofatelegraphcablefromEuropetoAmericawasproposed.Theengineerhadtoknowthedepthprofile(起伏形状)oftheroutetoestimatethelengthofcablethathadtobemanufactured.ItwastoMauryoftheUSNavythattheAtlanticTelegraphCompanyturned,in1853,forinformationonthismatter.Inthe1840s,Mauryhadbeenresponsibleforencouragingvoyagesduringwhichsoundings(测水深)weretakentoinvestigatethedepthsoftheNorthAtlanticandPacificOceans.Later,someofhisfindingsarousedmuchpopularinterestinhisbookThePhysicalGeographyoftheSea．Thecablewaslaid,butnotuntil1866wastheconnectionmadepermanentandreliable.Attheearlyattempts,thecablefailedandwhenitwastakenoutforrepairsitwasfoundtobecoveredinlivinggrowths,afactwhichdefiedcontemporaryscientificopinionthattherewasnolifeindeeperpartsofthesea.Withinafewyearsoceanographywasunderway.In1872Thomsonledascientificexpedition(考察),whichlastedforfouryearsandbroughthomethousandsofsamplesfromthesea.Theirclassificationandanalysisoccupiedscientistsforyearsandledtofive-volumereport,thelastvolumebeingpublishedin1895.TheaimofthevoyagesMaurywasresponsibleforinthe1840swas____.（）A.tomakesomesoundingexperimentsintheoceansB.tocollectsamplesofseaplantsandanimalsC.toestimatethelengthofcablethatwasneededD.tomeasurethedepthsofthetwooceans

12、IoncewenttoatowninthenorthofEnglandonbusiness.Itwasabout7:30intheeveningwhenIreachedthehotel.Themanageress,astrictoldladyof?about60,showedmetomyroom.WhenIaskedherwhattimedinnerwas,shesaidtherewasonly?onesittingat6:30,andIhad_____21_____it."Nevermind,"Isaid."I′mnotveryhungry.I′11justhaveadrinkinthebar(酒吧)anda?sandwich.""Bar!"she____22______hervoice."Thisisarespectablehotel,youngman.Ifyouwantbeer,you?mustgosomewhereelse."Shespoke____23______aglassofbeerwasadangerousdrug.Iwenttoabarandhadsomebeerandsandwichesandthenwenttothecinema.Atabout11:30I_____24_____.Everythingwasindarkness.Iknockedatthedoor,butnothinghappened.The_____25_____sound?wasthe′churchclockopposite,whichsuddenlystruckthehalf-hourwithsuchforcethatitmademe?jump._____26_____awindowopenedupstairs.Theoldlady_____27_____andaskedmewhatwasgoingon.I?explainedwhoIwasandsheletme_____28_____aftertenminutes′wait.Shewasinhernightdress.She?toldmeseriouslythatguestswere_____29_____tobebackinthehotelby11o′clock.Iwenttobedbutcouldnotsleep.Everyquarterofanhourthechurchclockstruckandatmidnightthewholehotelshookwiththenoise.Justbeforedawn,Ifinally_____30_____WhenIarrivedatbreakfast,everyoneelsehadnearly_____31_____andtherewasnotenoughcoffee?togoround."Didyou_____32_____well,youngman?"theoldladyasked."_____33_____,Idon′tthinkIcouldgothroughanothernightinthatroom,"Ireplied."Ihardly?sleptatall.""That"sbecauseyouwere_____34_____allnightdrinking!"shesaidangrily,putting____35______tothe?conversation.

13、Franklyspeaking,I′dratheryou__________anythingaboutitforthetimebeing.A.didn'tdoB.haven'tdoneC.don'tdoD.havedone

14、AttheUniversityofKansasartmuseum,scientiststestedtheeffectofdifferentcoloredwallsontwogroupsofvisitorstoanexhibitofpaintings.Forthefirstgrouptheroomwaspaintedwhite;forthesecond,darkbrown.Movementofeachgroupwasfollowedbyanelectricalequipmentunderthecarpet.Theexperimentshowedthatthosewhoenteredthedarkbrownwalkedmorequickly,coveredmorearea,andspentlesstimeintheroomthanpeopleinthewhiteone.Darkbrownmadepeoplemoreactive,buttheactivityendedsooner.Notonlythechoiceofcolorsbutalsothegeneralappearanceofaroomaffectsthoseinside.Anotherexperimentpresentedpeoplewithphotographsoffaceswhoseenergywastobecommented.Threegroupsofpeoplewereused;eachwasshownthesamephotos,buteachgroupwasinanordinaryroom--aniceoffice.Thethirdwasinatastefullydesignedlivingroomwithcarpeting.Resultsshowedthatthepeopleinthebeautifulroomtendtogivehighermarkstothefacesthanthoseintheuglyroomdid.Otherstudiesthatstudentsdobetteronteststakenincomfortableroomthaninordinary-lookingoruglyrooms.Thispassageprovidesuswith____.（）A.apieceofscientificinformationB.anormallessonC.aninterestingtestD.apieceofnews

15、Doyoufindgettingupinthemorningsodifficultthatitispainful?Thismightbecalledlaziness,butDr.Kleitmanhasanewexplanation.Hehasprovedthateveryonehasadailyenergycycle.Duringthehourswhenyoulabourthroughyourworkyoumaysaythatyouare“hot”.That'strue.Thetimeofdaywhenyoufeelmostenergeticiswhenyourcycleofbodytemperatureisatitspeak.Forsomepeoplethepeakcomesduringtheforenoon.Forothersitcomesintheafternoonorevening.Noonehasdiscoveredwhythisisso,butitleadstosuchfamiliarmonologues（自言自语）as:“Getup,John!You'llbelateforworkagain!”ThepossibleexplanationtothetroubleisthatJohnisathistemperature-and-energypeakintheevening.Muchfamilyquarrellingendswhenhusbandsandwivesrealizewhattheseenergycyclesmean,andwhichcycleeachmemberofthefamilyhas.Youcan'tchangeyourenergycycle,butyoucanlearntomakeyourlifefititbetter.Habitcanhelp,Dr.Kleitmanbelieves.Maybeyou'resleepyintheeveningbutfeelyoumuststayuplateanyway.Counteract（对抗）yourcycletosomeextentbyhabituallystayinguplaterthanyouwantto.Ifyourenergyislowinthemorningbutyouhaveanimportantjobtodoearlyintheday,risebeforeyourusualhour.Thiswon'tchangeyourcycle,butyou'llgetupsteam（鼓起干劲）andworkbetteratyourlowpoint.Getofftoaslowstartwhichsavesyourenergy.Getupwithaleisurelyyawnandstretch.Sitontheedgeofthebedaminutebeforeputtingyourfeetonthefloor.Avoidthetroublesomesearchforcleanclothesbylayingthemoutthenightbefore.Wheneverpossible,doroutineworkintheafternoonandsavetasksrequiringmoreenergyorconcentrationforyoursharperhours.Youareadvisedtorisewithayawnandstretchbecauseitwill____.（）A.helptokeepyourenergyfortheday'sworkB.helpyoutocontrolyourtemperearlyinthedayC.enableyoutoconcentrateonyourroutineworkD.keepyourenergycycleundercontrolallday

16、InBritain,peoplehavedifferentattitudestothepolice.Mostpeoplegenerally21themandthejobtheydo-althoughtherearecertainpeoplewhodonotbelievethatthepolice22havethepowerthattheydo.Whatdoesapolicemanactuallydo?Itisnot23jobtodescribe.Afterall,apolicemanhasanumberofjobsinone.Apolicemanoftenhastocontroltraffic,either24footinthecenterofatown,orinapolicecarontheroads,indeed,inBritain,hemightbeintheTrafficPoliceandspendall,oralotof,hittime25upanddownmainroadsandmotorways.Atrafficpolicemanhastohelpkeepthetrafficmoving,stop26motoristsandhelpwhenthereisanaccident.Apolicemanhastohelpkeepthe27,too.Ifthereisafightorsomeotherdisturbance,we28thepolicetocomeandrestoreorder.Andtheyoftenhavetodealwithsituationatgreatrisktotheirown29.Weexpectthepolicetosolvecrimes,ofcourse,soanordinarypoliceman,evenifheisnotadetective,willoftenhavetohelp30andarrestcriminals.And31dowecallwhenthereisanemergency--anaircrash,afire,aroadaccident,orarobbery?Wecallthepolice．32apolicemanhastobepreparedtofaceanyunpleasantemergencythatmayhappeninthe33world．Thepolicedoanabsolutelynecessaryjob,theydoit34wellandIsupportthem,butIdonotenvypoliceman.IdonotthinkthatIcould35dothejobofapoliceman.A.restingB.tiredC.speedingD.drunken

17、Intheracetothemoon，whocameinfirst?YoumightsaytheanswerisNeilArmstrong，BuzzAldrin，andMichaelCollins，thecrewofApollo11.OryoucouldrepresentforthecrewofApollo10，whichreachedthemooninMay1969andthenheadedbacktoEarthwithoutlanding.Butthereisamuchstrangeranswertothisquestion，dependingonhowmuchyoucareabouthumansandwhatyourdefinition（定义）ofreachingthemoonmightbe.Beforeanypeoplearrivedatthemoon，otheranimalshadgottherefirst.AndunlikethedogsandmonkeysthatweremadefamousinearlyspaceshotsandEarthorbits，thefirstcreaturestoreachthemoonwereapairoftortoises，Discovery'sAmyShiraTeitelremindedus.TheSovietspacecraft（航天器）senttheanimalsaroundthemoon—althoughnotintoitsorbit—duringamissioninthemiddleofSeptember，1968.Theunmanned（无人驾驶的）craftthenreturnedtoEarthanddashedintotheIndianOcean，afterwhichtheRussiansrecoveredthecraft.Amonthlater，Sovietscientistsrevealedthatthespacecrafthadbeenatinyship，carryingthetortoises，wineflies，mealworms，plants，seeds，bacteria，andotherlivingmatter.Thetortoises，ashistoryrecords，lostabout10percentoftheirbodyweight，buthadahealthyappetitewhentheyreturnedtoEarth.Inthefollowingcheckupscomparingtheanimalstostay-at-hometurtlesusedasatestcontrol，"mostthingsseemednormal，asidefromsomevaguelyexplainedminorproblemswiththeliver.Whatthisallmeansisthat，asTeitelexplained，"ThefirstlivingbeingstoseeanEarthrisefromtheMoonwereRussiantortoises.However，asfarasIcantell，theanimalswerenotnamed.”WhathappenedtotheSovietspacecraft?A.ItwaswreckedduringthemissionB.ItwasrecoveredafteritsreturntoEarthC.Itstayedinthemoon'sorbitD.Itdisappearedintheouterspace

18、AttheUniversityofKansasartmuseum,scientiststestedtheeffectofdifferentcoloredwallsontwogroupsofvisitorstoanexhibitofpaintings.Forthefirstgrouptheroomwaspaintedwhite;forthesecond,darkbrown.Movementofeachgroupwasfollowedbyanelectricalequipmentunderthecarpet.Theexperimentshowedthatthosewhoenteredthedarkbrownwalkedmorequickly,coveredmorearea,andspentlesstimeintheroomthanpeopleinthewhiteone.Darkbrownmadepeoplemoreactive,buttheactivityendedsooner.Notonlythechoiceofcolorsbutalsothegeneralappearanceofaroomaffectsthoseinside.Anotherexperimentpresentedpeoplewithphotographsoffaceswhoseenergywastobecommented.Threegroupsofpeoplewereused;eachwasshownthesamephotos,buteachgroupwasinanordinaryroom--aniceoffice.Thethirdwasinatastefullydesignedlivingroomwithcarpeting.Resultsshowedthatthepeopleinthebeautifulroomtendtogivehighermarkstothefacesthanthoseintheuglyroomdid.Otherstudiesthatstudentsdobetteronteststakenincomfortableroomthaninordinary-lookingoruglyrooms.Accordingtothepassage,wemayconcludethatthewhiteraroomis____.（）A.thelongerpeopleliketostayinitB.thesoonerpeopleinitwillleaveC.themoreactivepeopleinitwillbecomeD.themoreexcitedpeople

19、Inancienttimeswealthwasmeasuredandexchangedinthingsthatcouldbetouched:food,tools,andpreciousmetalsandstones.Thenthebartersystemwasreplacedbycoins,whichStillhad?realvaluesincetheywerepiecesofraremetal.Coinswerefollowedbyfiatmoney,papernotesthat?havevalueonlybecauseeveryoneagreestoacceptthem.Todayelectronicmonetarysystemsaregraduallybeingintroducedthatwilltransformmoneyinto?evenlesstangibleforms,reducingittoaseriesof"bitsandbytes",orunitsofrmation,goingbetweenmachinesatthespeedoflight.′Already,electronicfundtransferallowsmoneytobe?instantlysentandreceivedbydifferentbanks,companies,andcountries?throughcomputersandtelecommunicationsdevices.Accordingtothepassage,whichofthefollowingwastheearliestkindOfexchangeofwealth?《》（）A.BarteredfoodsB.FiatmoneyC.CoincurrencyD.Intangibleforms

20、Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseofraysfromthesunandotherstars.Theatmosphereagainactsasourprotectiveblanketonearth.Lightgetsthroughandthisisessentialforplantstomakethefoodwhichweeat.Heat,too,makesourenvironmentendurable.Variouskindsofrayscomethroughtheairfromouterspace,butenormousquantitiesofradiationfromthesunarescreenedoff.Assoonasmenleavetheatmospheretheyareexposedtothisradiation.Buttheirspacesuitsorthewallsoftheirspacecraft,iftheyareinside,dopreventalotofradiationdamage.Radiationisthegreatestknowndangertoexplorersinspace.Theunitofradiationiscalled“rem”.Scientistshavereasontothinkthatamancanputupwithfarmoreradiationthan0.1remwithoutbeingdamaged;thefigureof60remshasbeenagreedon.Thetroubleisthatitisextremelydifficulttobesureaboutradiationdamage－apersonmayfeelperfectlywell,butthecellsofhisorhersexorgansmaybedamaged,andthiswillnotbediscovereduntilthebirthofdeformed（畸形的）childrenorevengrandchildren.MissionsoftheApolloflightshavehadtocrossbeltsofhighradiationand,duringtheoutwardandreturnjourneys,theApollocrewaccumulatedlargeamountofrems.Sofar,nodangerousamountsofradiationhavebeenreported,buttheApollomissionshavebeenquiteshort.Wesimplydonotknowyethowmenaregoingtogetonwhentheyspendweeksandmonthsoutsidetheprotectionoftheatmosphere,workinginaspacelaboratory.Drugsmighthelptodecreasethedamagedonebyradiation,butnoreallyeffectiveoneshavebeenfoundsofar.Fromthepassagewecanknow____.（）A.theApollomissionwasverysuccessfulB.It'snotaeasyjobtoprotectfromspaceradiationC.astronautswillhavedeformedchildrenorgrandchildrenD.radiationisnotathreattowell-protectedspaceexplorers

21、ManypeoplebelievethatAmericanslovetheircarsalmostmorethananythingelse.Theyare21aboutcars.Notonlyisthecarthe22meansoftransportationintheStates,ithas23becomea“plaything”.24thetimeyoungstersbecomefourteenyearsoldoreven25,they'relikelytostart26ofhavingtheirowncars.IntheUSA,the27family,ifthefatherisnot28work,canaffordtobuyanewcareveryfiveyears.However,manyyoungpeople29afterschoolinordertosavemoneytobuyacar.Learningtodriveandgettingadriverlicensemaybeoneofthemostexciting30ofayoungperson'slife.Driver31isoneofthemostpopularcourses.Attheendofthecoursethestudentwill32adrivingtestforalicense.33many,thatpieceofpapermeansthattheyhavegrownup.IntheUnitedStates,manymenandwomen34tohavecars.Peopleusecarstogotowork.35