廣東省潮州市公共英語五級(jí)(筆試)重點(diǎn)匯總（含答案）

廣東省潮州市公共英語五級(jí)(筆試)重點(diǎn)匯總（含答案）學(xué)校:________班級(jí):________姓名:________考號(hào):________

一、1.ListeningComprehension(15題)1.PartC

Directions:Youwillhearatalk.Asyoulisten,answerthequestionsorcompletethenotesinyourtestbookletforQuestions21-30bywritingNOTMORETHANTHREEwordsinthespaceprovidedontheright.YouwillhearthetalkTWICE.

Younowhave1minutetoreadQuestions21-30.

聽力原文：W：Dr．Huber，whendidyoufirstbecomeinterestedinphysicsandmusic?

M：Ican'trememberatimewhenIwasn'tinterestedinphysics．WhenIwasachild．Iwasverycuriousabouttheworldaroundme．Forexample．Ialwayswonderedwhylightbehavesthewayitdoes．Ifounditmorefuntoplaywithaprismthantoplaywiththekidsintheneighborhood．Iwasn'tverysocial．butIwasreallyintofiguringouthowthingsworked．IgotmyowntelescopewhenIwaseightyearsold．a(chǎn)ndIlovedtotakeitoutatnightandgostargazing．Iwouldlookattheplanetsandstarsandwonderwhatwasoutthere．WhenIwasten．myfatherboughtmeabookontheuniverse，andIjustateitup．Infact，Istillhavethatbookrighthereinmyoffice．

Itwasthesamewithmusic．I'vealwayshadanaturalearformusic．perfectpitch．Evenasayoungchild，ifIheardasongontheradio，Icouldgorighttothepianoandplayit．WhenIheardasoundliketheringofatelephone，Icouldidentifyitspitchandplaythenoteonthepiano．However．Ididn'tdevelopaseriousinterestinbecomingapianistuntilIwasincollege．Ialsoseemedtodowellinschoolinthevisualartslikepaintinganddrawing．

W：Whatcommonalitydoyouseebetweenmusicandphysics?

M：Thereisacommonmisconceptionthatartandsciencearecompletelyseparatedfromeachother．Ithinkthedistinctionisartificial．Inreality,artandsciencearenotasmutuallyexclusiveasonemightassume．Solvingacomplicatedmathematicalproblem，forexample，canrequirethesamedegreeofcreativethinkingaspaintingalandscapeorwritingapoem．IfeelanindefinabletinglewhenIplaytheSchumannConcertoordancethepasdedeuxfromRomeoandJuliet．Igetthatthesametinglefromtheoreticalphysics．

Thebeautyofartisreadilyapparenttomostpeople．However，inthecaseoftheoreticalphysics，thebeautyisnotnearlyasaccessibletothegeneralpublic，butitiseverybitasexciting．Natureseemstofollowcertainprinciples，verymuchthesameasartdoes．

It'snotuncommonforphysiciststobecomeaccomplishedmusicians．Musictheoryisaverymathematicaldiscipline．Relationshipsamongvariousnotesinclassicalharmonyarebasedonsimplemathematicalrelationships．

W：Youhavesaidthatphysicsisbeautiful．Whatmakesitbeautifultoyou?

M：Tome，it'sincrediblethewaynatureseemstoworksoperfectly．Ithinkitisbeautiful．Ialwaystellmystudentsonthefirstdayofclass．“IfyoulikereadingSherlockHolmesdetectivestories，you'lllikedoingphysicsproblems．”Physicsisaboutfiguringthingsout—discoveringhowtheywork，justlikeadetective．

Alotofpeoplefearphysicsbecausetheyviewitasabigcomplicatedjumbleoffactsthathavetobememorized．Butthat'snottrue．It'sanunderstandingofhownatureworks，howthevariouspartsinteract．Onecanviewartandliteratureastherelationshipsandinteractionsofideas．Inthesameway，physicsstudiestherelationshipsandinteractionsofconcepts．Inotherwords，tomeartandsciencefundamentallyattempttoachievethesameobjective—understandingoftheworldaroundus!

Thewholeuniverseseemstofollowsomeverybasicprinciplesasitevolvesinwithtime，someoftheseprinciplesincludingtheConservationofEnergyandtheConservationofAngularMomentum．Theconservationlawsofphysicsarelikenon-interestbearingcheckingaccounts．Inthecaseofenergyconservation，youcanmakeenergydepositsandenergywithdrawals，butalltheenergyisaccountedfor．

TherotationofobjectsisgovernedbyalawcalledtheConservationofAngularMomentum，whichappliestoeverythingin

2.Governmentbuildingsoftenhavespecialpathsforthosepeoplehandicapped.

A.RightB.Wrong

3.Wherewasthemailataplantationpassedontome?

4.Whydoesthewomanrefertofootball?

A.Toillustratemen'sinterest.

B.Toillustratethatmenusuallydonottouchuponanythingimportantintalkingabouttheirworkandinterest.

C.Toprovemenaremostlyfootballfans.

D.Toshowthatmenintentionallytrytoavoidtalkingabouttheirtruefeelings.

5.Dr.WilsonasksWangtodoalittlemoreresearchbeforedecidingonhisproject.

A.TrueB.Fasle

6.Whenthetrampwasarrested,he______.

A.laugheda:thepolice

B.lookedforwardtogoingtoprison

C.tookhisbottleswithhim

D.didn'tmakeanyfuss

7.Theirschemeisbasedonthepremisethatallpeoplehaveabasicwayof______．

8.WangpreferstolivewithanEnglishfamily.

A.TrueB.Fasle

9.PartC

Directions:Youwillhearatalk.Asyoulisten,answerthequestionsorcompletethenotesinyourtestbookletforQuestions21-30bywritingNOTMORETHANTHREEwordsinthespaceprovidedontheright.YouwillhearthetalkTWICE.

Younowhave1minutetoreadQuestions21-30.

聽力原文：Asyouknow,manybigchangeshappenedafterChristopherColumbusandotherEuropeanscametotheAmericas500yearsago.TodayI'mgoingtotalkaboutachangeintheworlddietthewaypeoplecookedandate.Fivehundredyearsago,therewasabigchangeinthedietofpeopleallovertheworld.

Let'stalkaboutthedietinEurope500yearsago.Oneimportantfoodwasmeat.Europeansatemanykindsofmeat,includingbeef,lamb,goat,andpork.Europeansalsoatedairyproducts.milkandcheesemadefromthemilkofcowsandgoats.TheEuropeansateseveraldifferentgrains：Mostpeopleatewheat,andsomepeopleaterice,whichcamefirstfromAsia.

Now,let'slookatthedietintheAmericasabout500yearsago.ThedietofthenativeAmericanwasquitedifferentfromthedietoftheEuropeans.ThisisbecausetheEuropeanmeats,dairyproducts,andgrainsdidn'texistintheAmericas.However,thenativeAmericansatesomefoodthatdidn'texistinEurope.ThenativeAmericansatedifferentvegetables,suchaspotatoesandtomatoes.Theyatedifferentgrains,suchascorn.Theyatedifferentmeat,suchasturkeyandotherwildbirds.Theyalsousedspicessuchaschocolateandhotchilipeppers.NoneofthesefoodsexistedinEurope500yearsago.

Nowlet'stalkaboutthebigchangeintheworlddiet500yearsago,afterColumbusandtheEuropeanswenttotheAmericas.

AfterEuropeanswenttotheAmericas,thedietofthenativeAmericanschangedalot.WhentheEuropeanswenttotheAmericas,theytookmanynewkindsoffoodwiththem.TheEuropeansgavesomeofthefood,themeat,dairyproducts,andgrainstothenativeAmericansandthenthenativeAmericansstartedtousetheEuropeanfoodintheircooking.Asaresult,thedietintheAmerica'stodayisverydifferentfromtheirdiet500yearsago.Forexample,ifyougotoacountrylikeMexico,youcanseethatthetraditionalMexicanfoodusesalotofbeef,pork,cheese,wheat,andrice,allfoodsthatcamefromEuropewithColumbus.

AftertheEuropeansreturnedtoEuropefromtheAmericas,therewasalsoabigchangeinthedietofpeopleinEuropeandtherestoftheworld.WhentheEuropeansreturnedtoEurope,theytookmanynewkindsoffoodbackfromtheAmericas.Theytookbackthevegetables,grains,andspicesthattheyfoundintheAmericas.Littlebylittle,peoplealloverEuropestartedusingthenewfoodsintheircooking,andthenthefoodsspreadaroundtheworldtoAfrica,theMiddleEastandAsia.

Someofthenewfoodspreadveryquicklyaroundtheworld.Oneexampleisthechilipepper.Youmaybesurprisedtoknowthat500yearsago,thechilipepperdidn'texistinmanycountriesthat.arefamoustodayfortheirhotandspicyfoodmadewithchilies.Actually．weminkthatthefirstchilipepperwastakentoSpainbyColumbusin1493,whenhereturnedfromtheAmericas.Afteronly100years,chilipeppershadspreadallaroundtheworld.Theygroweasilyinwarmweather.TheonlyplacethatthechilipepperdidnotbecomepopularwasNorthernEurope,probablybecauseitistoocoldtogrowchilipepperseasily.

Althoughchilipeppersspreadquickly,otherfoodsfromtheAmericasspreadveryslowly.Potatoesareagoodexample.Ittookabout250yearsforthepotatoestospreadaroundtheworld.ThereasonittooksolongisthatEuropeansthoughtthatpotatoeswerepoisonous.ThepotatolookedalotlikeaverypoisonousplantthatgrewinEurope.Peoplewereafraidtoeatpotatoes!Foralongtime,peopleonlyusedpotatoestofeedtheirpigs.Butslowly,peoplestartedusingpotatoesasfoodforthemselves.Today,ofcourse

10.PartB

Directions:Youwillhear3conversationsortalksandyoumustanswerthequestionsbychoosingA,B,CorD.YouwillheartherecordingONLYONCE.

聽力原文：Doyoufindgettingupinthemorningdifficultandpainful?Thismightbecalledlaziness,butDr.Kleimanhasanewexplanation.Hehasprovedthateveryonehasadailyenergycycle.

Duringmehourswhenyoulaborthroughyourworkyoumaysaythatyou're"hot".That'strue.Thetimeofdaywhenyoufeelmostenergeticiswhenyourcycleofbodytemperatureisatitspeak.Forsomepeoplethepeakcomesduringtheforenoon.Forothersitcomesintheafternoonorevening.Noonehasdiscoveredwhythisisso.Thepossibleexplanationisthatoneisathistemperature-and-energypeakintheevening.Muchfamilyquarrelingendswhenhusbandsandwivesrealizewhattheseenergycyclesmean,andwhichcycleeachmemberofthefamilyhas.

Youcan'tchangeyourenergycycle,butyoucanlearntomakeyourlifefititbetter.Habitcanhelp,Dr.Kleimanbelieves.Maybeyou'resleepyintheeveningbutfeelyoumuststayuplateanyway.Counteractyourcycletosomeextentbyhabituallystayinguplaterthanyouwantto.Ifyourenergyislowinthemorningbutyouhaveanimportantjobtodoearlyintheday,risebeforeyourusualhour.Thiswon'tchangeyourcycle,butyou'llgetupandworkbetteratyourlowpoint.

Getofftoaslowstartwhichsavesyourenergy.Getupwithaleisurelyyawnandstretch.Sitontheedgeofthebedaminutebeforeputtingyourfeetonthefloor.Avoidthetroubleforcleanclothesbylayingthemoutthenightbefore.Wheneverpossible,doroutineworkintheafternoonandsavetasksrequiringmoreenergyorconcentrationforyoursharperhours.

Whatshouldonedoifhewantstoworkmoreefficientlyathislowpointinthemorning?

A.Changehisenergycycle.

B.Overcomehislaziness.

C.Getupearlierthanusual.

D.Gotobedearlier.

11.Ifamanlosestheabilitytorecognizehisleftsidehewilllosefeelingonhisbothsides.

A.RightB.Wrong

12.ThechangesintheU.S.A.inthe1960sbeganwiththe______RightMovement.

13.WhyareAmericanstudentsusuallyunderpressureofwork?

A.Becausetheiracademicperformancewillaffecttheirfuturecareerinthefuture.

B.Becausetheyareheavilyinvolvedinstudentaffairs.

C.Becausetheyhavetoobservetheuniversitydiscipline.

D.Becausetheywanttorunforpositionsofauthority.

14.Whichareaoftheworldcontributedtoanincreasebetween94/95and95/96?

15.WhatwerethetwothingsthatinterestedDr.Huber?

二、2.UseofEnglish(10題)16.(39)

17.(46)

18.

【C20】

19.(36)

20.(42)

21.(44)

22.

【C15】

23.(49)

24.(33)

25.Pollutionisa"dirty"word.Topollutemeanstocontaminate--topsoilorsomethingbyintroducingimpuritieswhichmake【C1】______unfitoruncleantouse.Pollutioncomesinmanyforms.Weseeit,smellit,【C2】______it,drinkit,andstumblethroughit.Weliterallylivedinandbreathepollution,and【C3】______surprisingly,itisbeginningto【C4】______ourhealth,ourhappiness,andourcivilization.

Oncewethoughtofpollution【C5】______meaningsimplythesmog—thechoking,stinging,dirty【C6】______thathoversovercities.Butairpollution,whileitis【C7】______themostdangerous,isonlyonetypeofcontaminationamongseveral【C8】______attackthemostbasiclifefunctions.

Throughtheuncontrolleduseofinsecticides,manhaspollutedtheland,【C9】______thewildlife.By【C10】______sewageandchemicalsintoriversandlakes,wehavecontaminatedour【C11】______water.Wearepollutingtheoceans,too,kiltingthefishand【C12】______deprivingourselves【C13】______aninvaluablefoodsupply.

Partoftheproblemisourexploding【C14】______.Moreandmorepeopleareproducingmorewastes.Butthisproblemisintensifiedbyour"throw-away"technology.EachyearAmericans【C15】______of7millionautos,20milliontonsofwastepaper,25millionpoundsoftoothpastetubesand48millioncans.Wethrowawaygumwrappers,newspapers,andpaperplates.Itisnolongerwiseto【C16】______anything.Todayalmosteverythingisdisposable.【C17】______ofrepairingatoasteroraradio,itiseasierandcheapertobuyanotheroneanddiscardtheold,even【C18】______95percentofitspartsmaystillbefunctioning.Babydiapers,whichusedtobemadeofreusablecloth,arenowpaperthrow-aways.Soonwewillwearclothingmadeof【C19】______:"Wearitonceandthrowitaway"willbethesloganofthefashionableconsciousness.

Whereisthisalltoend?Areweturningtheworldintoagiganticdump,oristherehopethatwecansolvethepollutionproblem?【C20】______,solutionsareinsight.Afewofthemarepositivelyingenious.

【C1】

三、3.ReadingComprehension(15題)26.

Whycanmanypeoplesee"silverlinings"totheeconomicshowdown?

A.Theywouldbenefitincertainways.

B.Thestockmarketshowssignsofrecovery.

C.Suchaslowdownusuallyprecedesaboom.

D.Thepurchasingpowerwouldbeenhanced.

27.At18,AshanthiDeSilvaofsuburbanClevelandisalivingsymbolofoneofthegreatintellectualachievementsofthe20thcentury.Bornwithanextremelyrareandusuallyfataldisorderthatleftherwithoutafunctioningimmunesystem(the"bubble-boydisease",namedafteranearliervictimwhowaskeptaliveforyearsinasterileplastictent),shewastreatedbeginningin1990witharevolutionarynewtherapythatsoughttocorrectthedefectatitsverysource,inthegenesofherwhitebloodcells.Itworked.Althoughherlastgene-therapytreatmentwasin1992,sheiscompletelyhealthywithnormalimmunefunction,accordingtooneofthedoctorswhotreatedher,W.FrenchAndersonoftheUniversityofSouthernCalifornia.Researchershavelongdreamedoftreatingdiseasesfromhemophiliatocancerbyreplacingmutantgeneswithnormalones.Andthedreamingmaycontinuefordecadesmore."Therewillbeagene-basedtreatmentforessentiallyeverydisease,"Andersonsays,"within50years."

It'snotentirelyclearwhymedicinehasbeensoslowtobuildonAnderson'searlysuccess.TheNationalInstitutesofHealthbudgetofficeestimatesitwillspend$432millionongene-therapyresearchin2005,andthereisnoshortageofpromisingleads.Thetherapeuticgenesareusuallydeliveredthroughvirusesthatdon'tcausehumandisease."ThevirusissortoflikeaTrojanhorse,"saysRonaldCrystalofNewYorkPresbyterian/WeillCornellMedicalCollege."Thecargoisthegene."

AttheUniversityofPennsylvania'sAbramsonCancerCenter,immunologistCarlJunerecentlytreatedHIVpatientswithageneintendedtohelptheircellsresisttheinfection.AtCornellUniversity,researchersarepursuinggene-basedtherapiesforParkinson'sdiseaseandararehereditarydisorderthatdestroyschildren'sbraincells.AtStanfordUniversityandtheChildren'sHospitalofPhiladelphia,researchersaretryingtofigureouthowtohelppatientswithhemophiliawhotodaymustinjectthemselveswithexpensiveclottingdrugsforlife.Animalexperimentshaveshowngreatpromise.

Butsomehow,thingsgetlostinthetranslationfromlaboratorytopatient.Inhumantrialsofthehemophiliatreatment,patientsshowaresponseatfirst,butitfadesovertime.Andthefieldhasstillnotrecoveredfromthesetbackitsufferedin1999,whenJesseGelsinger,an18-year-oldwithararemetabolicdisorder,diedafterreceivinganexperimentalgenetherapyattheUniversityofPennsylvania.Someexpertsworrythatthefieldwillbetarnishedfurtherifthenextpeopletobenefitarenotpatientsbutathletesseekinganedge.Thissummer,researchersattheSalkInstituteinSanDiegosaidtheyhadcreateda"marathonmouse"byimplantingagenethatenhancesrunningability;already,officialsattheWorldAnti-DopingAgencyarepreparingtotestathletesforsignsof"genedoping".Buttheprincipleisthesame,whetheryou'retryingtohelpahealthyrunnerrunfasterorallowamuscular-dystro-phypatienttowalk."Everybodyrecognizesthatgenetherapyisaverygoodidea,"saysCrystal."Andeventuallyit'sgoingtowork."

ThecaseofAshanthiDesilvaismentionedinthetextto

A.showthepromiseofgene-therapy

B.giveanexampleofmodemtreatmentforfataldiseases

C.introducetheachievementofAndersonandhisteam

D.explainhowgene-basedtreatmentworks

28.(80)

29.

Theeffectsofalmostuniversalemploymentwereoverwhelminginthat______.

A.thehouseholdandvillagecommunitydisappearedcompletely

B.mennowtravelledenormousdistancestotheirplacesofwork

C.youngandoldpeoplebecamesuperfluouscomponentsofsociety

D.theworkstatusofthosenotinpaidemploymentsuffered

30.(73)

31.(67)

32.

HowmanystaleslevyimporttaxesintheU.S.A.?

A.4.B.50.C.46.D.54.

33.(69)

34.Asthe21stcenturybegins,anumberofleadersinpolitics,education,andotherprofessionsbelievethattheUnitedStatesmustadoptsomenewvaluestogoalongwiththeoldtraditionalones.WhatnewvaluesshouldAmericansadopt?Thisisaverydifficultquestiontoanswer.Certainly,agreatervalueshouldbeplacedontheconservationofnaturalresources;Americansshouldlearntouselessandwasteless.ButconservationhasneverbeenastrongvaluetoAmericans,whohavebelievedthattheircountryofferedanendless,abundantsupplyofnaturalresources.

Recently,progresshasbeenmade—moreandmoreAmericansarerecyclingtheirpaper,cans,bottles,andothergoods—butoldwastefulhabitsdiehard.Furthermore,theneedtoprotecttheenvironmentmayconflictwiththeneedforjobs,asintheNorthwest,whereconservationistsbattlelumbercompaniesthatwanttocutdownancientredwoodtrees.AbeliefinthevalueofconservationisstillcomparedwithotherAmericanvalues;itcanbecomestrongeronlyasAmericansseetheneedforitmoreclearly.

Inaddition,Americansmayneedtoplaceastrongvalueoncooperationonanationalscaletoachieveimportantnationalobjectives.TheAmericanideaofthenationalgoodhasneverbeenbasedonnationalcooperationbutratheronthefreedomoftheindividual,maintainingthoseconditionsthatprovidethegreatestfreedomandprosperityfortheindividual.ItisfarmoredifficultforAmericanstoacceptsharedsacrificeforthecommongoodandwell-beingoftheentirecountry.Forexample,althoughthemajorityofAmericansbelievethatitisextremelyimportanttobalancethenationalbudgetandreducethedeficit,theydonotwanttoseecutsingovernmentprogramsthatbenefitthempersonally.

TheAmericanvalueofcompetitionalsohindersthedevelopmentofaspiritofnationalcooperation.Competitionsometimesencouragesfeelingsofsuspicionratherthanthemutualtrustthatisnecessaryforsuccessfulnationalcooperation.AlthoughAmericansoftencooperatesuccessfullyonthelocallevel—inneighborhoodgroupsandchurches,forexample—theybecomesuspiciouswhenthenationalgovernmentbecomesinvolved.Forexample,onthenationallevel,theymayseethemselvesaspartofaninterestgroupthatiscompetingwithotherinterestgroupsforgovernmentfunds.Arequestbythenationalgovernmentforsharedsacrificemaybeseenascoerciveanddestructiveratherthanvoluntaryandconstructive.However,thedemandsofthe21stcenturymaycompelAmericanstoplaceagreatervalueonnationalcooperationtosolveproblemsthataffectthemall,directlyandindirectly.

Thebesttitleofthispassagecouldbe______.

A.WhichisBetter,NewValueorOldValue

B.Conservationvs.NeedforJobs

C.TheNeedforNewNationalValues

D.CooperationandCompetition

35.

WhatisNOTtrueabouttheeightgirls?

A.Theyareallbetween12and17.

B.Theyhavetriedavarietyofmeasures.

C.Theyattendasuicidesquad.

D.Alltheirattemptstocommitsuicidearevital.

36.(76)

37.

Accordingtothefirstparagraphofthepassage,theauthorconsiderswhichofthefollowingtobemosthelpfulindeterminingthevalueofspecialprotectivelaborlegislationforwomen?

A.Acomparativestudyofpatternsofwork-relatedillnessesinstatesthathadsuchlawsandinstatesmatdidnot.

B.Anestimateofhowmanywomenworkersareinfavorofsuchlaws.

C.Ananalysisofthecosttoemployersofcomplyingwithsuchlaws.

D.Anexaminationoftheactualeffectsthatsuchlawshavehadinthepast0nwomenworkers.

38.

______providesaround20%oftheworld’selectricity?

39.

Inthethirdparagraph,Dr.Laraghimpliesthat______.

A.peopleshouldnotbeafraidoftakingexcessivesalt

B.doctorsshouldnotadvisepeopletoavoidsalt

C.anadequatetoexcessivesaltintakeisrecommendedforpeopleindisease

D.excessivesaltintakehasclaimedsomevictimsinthegeneralpopulation

40.

ItcanbeinferredfromthepassagethatthedifferencesbetweentheGlobalSupportCentreandthelocalre-pairshoplieinallthefollowingEXCEPT______.

A.efficiencyB.locationC.SetupCDsD.attitude

四、閱讀理解(5題)41.

第

34

題

Whichofthefollowingistrueaccordingtothispassage?

42.

第

47

題

tellsthestoryaboutretrievingthelastoneoffourbrothersinthewar?__________

43.

第

37

題

Whydoestheauthormentiongeneticengineeringandcomputerscience?

44.

根據(jù)下列選項(xiàng)回答26～30題：

第

26

題

1._________

45.

第

43

題

3.__________

參考答案

1.Eightyearsold．

2.B

3.Aneighbor．

4.B

5.A

6.D

7.seeingtime

8.A

9.(In)Asia．

10.C

11.B

12.Civil．

13.A

14.South(and)EastAsia/S(+)EAsia/(NOTSouth-eastAsia)South(and)EastAsia/S(+)EAsia/(NOTSouth-eastAsia)

15.Physicsandmusic．

16.linklink解析：與37題對(duì)應(yīng)，此處應(yīng)填link，表明在“near-pointgripping”和“slow，illegiblewriting”之間存在聯(lián)系。

17.differencedifference解析：顯然，這句話是在對(duì)老年人和年輕人寫字之間進(jìn)行比較，而且由后半句中的"getbetterat…”可知，此空必為“不同的”。

18.towardtoward解析：作者要表達(dá)的意思是“我怎么才能對(duì)別人誠(chéng)實(shí)?！庇⒄Z中表達(dá)“對(duì)某人…”一般是用介詞toward。故答案為toward。

19.airair解析：由前面的smog可知，此空處應(yīng)填與smog相應(yīng)的物質(zhì)，又由后面的“hoversovercities”可知，此物質(zhì)只能是“臟空氣”。

20.onon解析：focuson意為“集中于”，為固定短語。

21.ratherrather解析：此空所在句意為“用四個(gè)手指握筆而不是三個(gè)。”ratherthan表示“而不是”。

22.disposedispose解析：由前一句“但是這個(gè)問題因?yàn)槲覀兊摹耙淮涡浴奔夹g(shù)而加劇了?！笨芍颂帒?yīng)為“丟掉，扔掉”之意，即disposeof。

23.ageage解析：此段話均是在比較不同年齡段的人之間寫字的不同，故此空應(yīng)填“年齡”。

24.lessless解析：由此空前面的“deterioratedsharply”可知此空應(yīng)