2021年山西省大同市公共英語五級(筆試)知識點匯總（含答案）學校:________班級:________姓名:________考號:________

一、1.ListeningComprehension(15題)1.WhatdoesDr.Hubercomparetheuniverseto?

2.Howmanyreactionscouldyouhavetowardstheteacher'sreport?

3.Judgingbytheextraordinarilywarmclothessomepeoplewear,whatmightwelearnaboutthem?

A.Theymaybehomesickandfeelinsecure.

B.Theyareeithercoldorverysick.

C.Theymaytrytoattractotherpeople'sattention.

D.Theywanttoprotectthemselvesfromphysicalinjuries.

4.Itsoundsabitunscientificthatagoodmanageris______ratherthan______.

5.Whydoesthespeakersuggestwerisewithayawnandstretch?

A.Becauseitwillhelpkeepyourenergyfortheday'swork.

B.Becauseitwillhelpyoutocontrolyourtemperearlyintheday.

C.Becauseitwillhelpyoutoconcentrateonyourroutinework.

D.Becauseitwillkeepyourenergycycleundercontrolallday.

6.聽力原文：Theexpression，“lameduck”，callbeheardinalmostanyAmericantownorcity，especiallywherepeoplediscusspolitics．Mostoften，theyuseittodescribeapoliticianwhohascometotheendofhispower．

Thereareanumberofideasastowhere“lameduck”camefrom,thoughthepictureofalameduckisclearenough：aduckthathashaditswingscut，oritsfeetinjured，andcannolongerwalklikeahealthyone．

ThetermseemstohavecomeintotheAmericanlanguageaftertheCivilWarof1861-1865．Oneexplanationisthatitcamefromthelanguageofhunterswhofeltthatitwasfoolishtowastepowderortimeonadeadduck．Andalameduckisclosetobeingadeadduck．

Anotherexplanation，however，isthattheexpressioncamefromEngland．Thereitwasusedtodescribeamanwholostallhismoneyandcouldnotpayhisdebts．Hecoulddonothingbutwalklikealameduck．Andpeopleshowedlittlemercyforthepoorfellow．

ButintheUnitedStatespeopletookthephrasetodescribecongressmanwhofailedtogetre-electedbutstillhadalittletimeleftinoffice．

Later，theexpressionwasusedinabroadersense，generallydescribinganymanwhosedaysofpowerwerecomingtoanend．IthasoftenbeenusedtodescribethepositionofanAmericanpresidentinthelasttwoyearsorsoofhissecondterm．Itisadifficulttimeforhim，whenCongressisreadytoopposehimateveryturn．

WhereCantheexpression“lameduck”beheard?

A.Onlyamonghunters．

B.Amongprimaryschoolpupils．

C.Amongbeautifulladies．

D.Amongpeoplewhoarediscussingpolitics．

7.Intermsofacademic1evels，inwhichleveldowefindthesmallestnumber?

8.Thepast-orientedpeopleareflexiblein______．

9.聽力原文：Thehumannosehasgiventothelanguagesoftheworldmanyinterest-ingexpressions.Ofcourse,thisisnotsurprising.Withoutthenose,wecouldnotbreathenorsmell.Itisapartofthefacethatgivesapersonspecialcharacter.CyranodeBergeracsaidthatalargenoseshowedagreatmancourageous,courteous,manly,andintellectual.

Afamouswomanpoetwishedthatshehadtwonosestosmellarose!BlaisePascal,aFrenchphilosopher,madeaninterestingcommentaboutCleopatra'snose.Ifithadbeenshorter,hesaid,itwouldhavechangedthewholefaceoftheworld!

Historically,man'snosehashadaprincipalroleinhisimagination.Manhasreferredtothenoseinmanywaystoexpresshisemotions.Expressionsconcerningthenoserefertohumanweakness;anger,prideJealousyandrevenge.

InEnglishthereareanumberofphrasesaboutthenose.Forexample,toholdupone'snoseexpressesabasichumanfeeling—pride.Peoplecanholduptheirnosesatpeople,things,andplaces.

Thephrase,tobeledaroundbythenose,showsman'sweakness.Apersonwhoisledaroundbythenoseletsotherpeoplecontrolhim.Ontheotherhand,apersonwhofollowshisnoseletshisinstinctguidehim.

Forthehumanemotionofrejection,thephrasetohaveone'snoseputoutofjointisverydescriptive.Theexpressionappliestopersonswhohavebeenturnedasidebecauseofarival.Theirprideishurtandtheyfeelrejected.Thisexpressionisnotnew.ItwasusedbyErasmusin1542.

ThisisonlyasamplingofexpressionsinEnglishdealingwiththenose.Thereareanumberofothers.However,itshouldbeasplainasthenoseonyourfacethatthenoseismorethananorganforbreathingandsmelling!

Whatisthispassagemainlyabout?

A.Thehumannoseasanorganforbreathingandsmelling.

B.Thenoseprovidinguswithvariousexpressions.

C.Awomanpoet'swishtohavetwonoses.

D.InterestingcommentsmadeonCleopatra'snose.

10.Mr.Millerwillbuyanewhousewiththemoneyhehaswon.

A.TrueB.Fasle

11.Accordingtothespeaker,whydopesticidesposeathreattoamphibians?

A.Pesticidescancauseanamphibian'sskintodryout.

B.Pesticideskilltheinsectsthatamphibiansdependonforfood.

C.Dissolvedpesticidescaneasilyenteramphibian'sbodies.

D.Amphibiansmayeatplantsthathavebeentreatedwithpesticides.

12.聽力原文：Theexpression,"lameduck",canbeheardinalmostanyAmericantownorcity,especiallywherepeoplediscusspolitics.Mostoften,theyuseittodescribeapoliticianwhohascometotheendofhispower.

Thereareanumberofideasastowhere"lameduck"camefrom,thoughthepictureofalameduckisclearenough;aduckthathashaditswingscut,oritsfeetinjured,andcannolongerwalklikeahealthyone.

ThetermseemstohavecomeintotheAmericanlanguageaftertheCivilWarof1861-1865.Oneexplanationisthatitcamefromthelanguageofhunterswhofeltthatitwasfoolishtowastepowderortimeonadeadduck.Andalameduckisclosetobeingadeadduck.

Anotherexplanation,however,isthattheexpressioncamefromEngland.Thereitwasusedtodescribeamanwholostallhismoneyandcouldnotpayhisdebts.Hecoulddonothingbutwalklikealameduck.Andpeopleshowedlittlemercyforthepoorfellow.

ButintheUnitedStatespeopletookthephrasetodescribecongressmanwhofailedtogetre-electedbutstillhadalittletimeleftinoffice.

Later,theexpressionwasusedinabroadersense,generallydescribinganymanwhosedaysofpowerwerecomingtoanend.IthasoftenbeenusedtodescribethepositionofanAmericanpresidentinthelasttwoyearsorsoofhissecondterm.Itisadifficulttimeforhim,whenCongressisreadytoopposehimateveryturn.

Wherecantheexpression"lameduck"beheard?

A.Onlyamonghunters.

B.Amongprimaryschoolpupils.

C.Amongbeautifulladies.

D.Amongpeoplewhoarediscussingpolitics.

13.Afterdeliveringthenewinformation,whyshouldthespeakeralsogivehisaudiencesometime?

14.聽力原文：TheUniedStatesofAmericaisafoundingmemberoftheInternationalFootballAssociation.In1913theAmericanFootballAssociationwasfoundedwithover7,000registeredclubsand1.4millionplayers.

InhistorytheU.S.teamenteredthefinalsoftheWorldCupfourtimesandgaineddiethirdplaceinthefirstWorldCup.Butsincethe4thWorldCupUSAhaspaidmoreattentiontotheOlympicGamesandAmericanfootball.

TheheadcoachoftheU.S.teamnowisfromYugoslavia,the57-year-oldcoachmovedtoMexicotwenty-oneyearsagoandlaterhebecametheheadcoachofMexico'sNationalTeam.Afterthatheleftforanevensmallercountry,CostaRica.Beforelong,hebecamewell-knownallovertheworld.

OnMarch7th,1991,hefacedthebiggestchallengeinallhislifetoleadtheU.S.team.TheAmericanFootballAssociationspentayearbuildingafootballfieldinCaliforniaforhim.Andintwoyears'timehisteamdefeatedtheteamsofIreland,EnglandandPortugal.

ThustheU.S.teamenteredwitheaseintothefinalsoftheWorldCup.Andasthehost,itenteredautomaticallyintothefirstcirclein1994.

WhenwastheAmericanFootballAssociationfounded?

A.In1913.B.In1930.C.In1914.D.In1917.

15.Waterisasimportantasvitamins,mineralsandproteinsforlife.

A.RightB.Wrong

二、2.UseofEnglish(10題)16.

【C12】

17.(48)

18.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】

19.

【C7】

20.

【C3】

21.

【C4】

22.

【C20】

23.(33)

24.

【C16】

25.(46)

三、3.ReadingComprehension(15題)26.PartC

Directions:Answerquestions71-80byreferringtothefollowinggames.

Note:AnswereachquestionbychoosingA,BorCandmarkitonANSWERSHEET1.Somechoicesmayberequiredmorethanonce.

Whichschool...

isnotforboys?71.______

haswonthenationalaward?72.______

ownsmostfull-timefacultymemberswhoholdaPh.D.orterminaldegreeintheirfield?

73.______

hasagoodreputationforwhattheydoforsomespecialpersons?74.______

hasalimitintheageforthosewhowillliveoncampus?75.______

putemphasisondevelopingstudentsverbaltalents?76.______

doesnotofferanyscholarships?77.______

providesstudentswithvocationaltraining?78.______

combinesliberalartswithprofessionalstudiesandpromotesservicetoothers?79.______

appliesadvanceddevicestoteaching?80.______

A

EllesmereCollegeisoneofthefastest-growingindependentschoolsinthecountryoverthepasttwoyears,withpupils'numberrisingbyalmost20%.Thegrowthhasledtoa$1millioninvestmentprogramin1999andthebuildingofanewlowerschoolforboysandgirlsagedninetothirteen.Thenewlowerschoolwillbethelargestsinglebuildingprojectatthecollegesinceitsfoundationin1884.

Intheseniorschool,two-thirdsofthepupilsareboarders,andboardingisavailablefromtheageof11.Thesixthform.isstrongwithover120pupils;thereisanexceptionallywide-rangeofA-levelsubjectsonofferandtheCollegehaspioneeredtheuseofvideoconferencingtechnologyasawayofimprovingitscurriculum.MicrosoftOfficequalificationsarealsoavailableinthesixthform.

TheCollegeissetinextensivegroundsinthebeautifulNorthShropshireLakeDistrict.Facilitiesareexcellentandvarious,andincludemanysportsfields,sixall-weathertenniscourts,indoorandoutdoorshootingranges,anine-holegolfcourseandapurpose-builttheater.TheCollegesailingclubhasboatswithinwalkingdistanceonWhitemere.

ThemajorityofthedaypupilsattheCollegeenjoytheCollegebusservicewhichcoversaverywidearea.BoardingthroughouttheSchoolhasbenefitedfromarecentmultimillionpoundrefurbishmentwhichhasdoneawaywithdormitoriesinfavorofmodern,comfortablerooms,thelargestsleepingsix,butmostsleepingtwoorone.

Academicstandardsarehighforaschoolwithabroadentryrange.Manyscholarshipsareawardedacrossarangeoftalents,buttheemphasisofanEllesmereeducationisfirmlyonbreadthwitheachpupilachievinghisorherfullpotential,whateverthatmaybe.Recentpupilsuccessesrangefrominternationalhonorsinshooting,fencingandcanoeingtoarecentleaver'selection—afteronlyoneyearasanundergraduate—toanExhibitioninchemistryatJesusCollege,Oxford.TheCollegehasanationalreputationforthequalityofitsdyslexiaprovision.

B

Thechoiceoftherightschoolforyoursonordaughterisimportant.Forover100yearsEdgehillCollegehasproudlypreparedindependently-mindedyoungpeopletotaketheirplaceinaworldofrapidlyadvancingtechnology.

Thefoundationsofasoundeducationarelaiddownearlyinlife.Edgehilldoesthiswithinthefriendlywallsofitsprepscho

27.(74)

28.

Whenmentioning"the$4millionto$10millionrange"(Line3-4,Paragraph3)theauthoristalkingabout______.

A.goldmarket

B.realestate

C.stockexchange

D.ventureinvestment

29.TheVillageGreeninNewMilford,Connecticut,isasnapshotofNewEnglandcharm：acarefullymanicuredlawnflandedbyscrupulouslymaintainedcolonialhomes.Babysittersdandlekidsinthewoodengazebo,waitingforcommuterparentstoreturnfromNewYork.OnalazyafternoonlastweekCarolineNicholas,16,hadnothingmorepressingtodothandrinkintheearly-summersunshineanddiscusstherecenteventsintown.“Idon'tthinkalotofolderpeopleknewtherewereunhappykidsinNewMilford,”shesaid,“Icouldseeitcoming.”

Inafive-dayperiodinearlyJuneeightgirlswerebroughttoNewMilfordHospitalafterwhathospitalofficialscallsuicidalgestures.Thegirls,allbetween12and17,triedavarietyofmeasures,includingheavydosesofalcohol.over-the-countermedicinesandcutsorscratchestotheirwrists.Nonewassuccessful,andmostdidn'trequirehospitalization；butatleasttwoattempts,accordingtothehospital,couldhavebeenvital.Theirreasonsseemedasmundaneastheotherhappen-stancesofsuburbanlife.“Iwasjustsickofitall,”onetoldareporter,“Everythinginlife.”Mostalarming,emergency-roomdoctorFrederickLohsetoldalocalreporterthatseveralgirlssaidtheywerepartofasuicidepact.Thehospitallaterbackedawayfromthisremark.Butcominginthewakeofatleastsixteensuicideattemptsoverthepreviousfewmonths．thissuddencluster—alongwiththeinfluxofmedia—hassetthiswell-groomedsuburbof23,000onedge.AtatownmeetinglastWednesdaynight,DrSimonSobo,chiefofpsychiatryatthehospital,toldmorethan200parentsandkids,“We'retalkingaboutacrisisthathasreallygottenoutofhand.”Laterheadded,“TherehavebeenmoresuicideattemptsthisspringthanIhaveseeninthe13yearsIhavebeenhere.”

Sobosaidthatthegirlshetreateddidn'thaveseriousproblemsathomeorschool.“Manyofthesewerepopularkids,”hesaid,“Theygotplentyoflove,butbeneaththereassuringsigns,aswathofteensherearenotmakingit.”Somesaythatdrugs,bothpotand‘realdrugs’,arecommonplace.KidshaveshownupwithLIFESUCKSandLONGLIVEDEATHpennedontheirarms.Afewgirlscasuallydisplayscarsontheirarmswheretheycutthemselves.“You'dbesurprisedhowmanykidstrysuicide,”saidonegirl,17.“Youdon'twanttoputpainonotherpeople;youputitonyourself.”Shesaidsheusedtocutherself“justtoreleasethepain”.

Emily,15,afriendofthreeofthegirlstreatedin,June,saidonewashavingfamilyproblems,onewas“upsetthatday”andthethirdwas“justupsetwitheverythingelsegoingon”.Shesaidtheyweren'treallytryingtokillthemselves—theyjustneededconcern.AsSobonoted,“What'sgoingoninNewMilfordisnotuniquetoNewMilford.”Thesameunderlyingcultureofdespaircouldbefoundinanytown.Butteensuicide,headded,canbea“contagion”.RightnowNewMilfordhasthebug-andhasitbad.

Whatisthemainsubjectofthepassage?

A.EightgirlscommittedsuicideinNewMilford.

B.ThevillageGreenisnotacharmingplace.

C.Teenagersuicide.

D.Dr.SimonSobo'sachievements.

30.PartB

Directions:Inthefollowingarticlesomeparagraphshavebeenremoved.ForQuestions66-70,choosethemostsuitableparagraphfromthelistA-Ftofitintoeachofthenumberedgaps.Thereisoneparagraphwhichdoesnotfitinanyofthegaps.MarkyouranswersonANSWERSHEET1.

AccordingtotheAmericanAcademyofDermatology,anestimated10to50millionpeopleinthiscountryhaveanallergicreactiontopoisonivyeachyear.Poisonivyisoftenverydifficulttospot.Itcloselyresemblesseveralothercommongardenplants,andcanalsoblendinwithotherplantsandweeds.Butifyoucomeintocontactwithit,you'11soonknowbytheitchy,blisteryrashthatformsonyourskin.Poisonivyisared,itchyrashcausedbytheplantthatbearsitsname.Manypeoplegetitwhentheyarehikingorworkingintheirgardenandaccidentallycomeintodirectcontactwiththeplant'sleaves,roots,orstems.Thepoisonivyrashoftenlookslikeredlines,andsometimesitformsblisters.

66.______

About85percentofpeopleareallergictotheurushiolinpoisonivy,accordingtotheAmericanAcademyofDermatology.Onlyatinyamountofthischemical—1billionthofagram—isenoughtocausearashinmanypeople.Somepeoplemayboastthatthey'vebeenexposedtopoisonivymanytimesandhavenevergottentherash,butthatdoesn'tnecessarilymeanthey'renotallergic.Sometimestheallergydoesn'temergeuntilyou'vebeenexposedseveraltimes,andsomepeopledeveloparashaftertheirveryfirstexposure.Itmaytakeuptotendaysfortherashtoemergethefirsttime.

67.______

Herearesomeotherwaystoidentifythepoisonivyplant.Itgenerallygrowsinaclusteroflow,weed-likeplantsorawoodyvinewhichcanclimbtreesorfences.Itismostoftenfoundinmoistareas,suchasriverbanks,woods,andpastures.Theedgesoftheleavesaregenerallysmoothorhavetiny"teeth".Theircolorchangesbasedontheseason—reddishinthespring;greeninthesummer;andyellow,orange,orredinthefall.Itsberriesaretypicallywhite.

68.______

Thebody'simmunesystemisnormallyinthebusinessofprotectingusfrombacteria,viruses,andtheirforeigninvadersthatcanmakeussick.Butwhenurushiolfromthepoisonivyplanttouchestheskin,itinstigatesanimmuneresponse,calleddermatitis,towhatwouldotherwisebeaharmlesssubstance.Hayfeverisanotherexampleofthistypeofresponse;inthecaseofhayfever,theimmunesystemoverreactstopollen,oranotherplant-producedsubstance.

69.______

Theallergicreactiontopoisonivyisknownasdelayedhypersensitivity.Unlikeimmediatehypersensitivity,whichcausesanallergicreactionwithinminutesofexposuretoanantigen,delayedhypersensitivityreactionsdon'temergeforseveralhoursorevendaysaftertheexposure.

70.______

Intheplaceswhereyourskinhascomeintocontactwithpoisonivyleavesorurushiol,withinonetotwodaysyou'lldeveloparash,whichwillusuallyitchrredden,burn,swell,andform.blisters.Therashshouldgoawaywithinaweek,butitcanlastlonger.Theseverityofthereactionoftenhastodowithhowmuchurushiolyou'vetouched.Therashmayappearsoonerinsomepartsofthebodythaninothers,butitdoesn'tspread—theurushiolsimplyabsorbsintotheskinatdifferentratesindifferentpartsofthebody.Thickerskinsuchastheskinontheonsolesofyourfeet,ishardertopenetratethanthinnerskinonyourarmsandlegs.

A.Becauseurushiolisfoundinallpartsofthepoisonivyplant—theleaves,stems,androots—it'sbesttoa-voidtheplantentirelytopreventarash.Thetroubleis,poisonivygrowsalmosteverywhereintheUnitedStates(withtheexceptionoftheSouthwest,Alaska,andHawaii),sogeographywon'thelpyou.Thegeneralruletoidentifypoisonivy,"leafletsthree,

31.

Theword"cleared"(Line4,Paragraph3)mightmean______.

A.permittedB.removedC.provedD.produced

32.

Whichofthefollowingistrueaccordingtothetext?

A.TheHartspreferapublicuniversitytoaprivateone.

B.Itismucheasiertopaythetuitionatpresent.

C.Allstudentscangettheaidpackage.

D.Traditionalscholarshipsarestillattractivetosomefamilies.

33.

Whatisthemainmessageofthistext?

A.Thatthesaltscareisnotjustified.

B.Thattheorginofhypertensionisnowfound.

C.Thatthemoderateuseofsaltisrecommended.

D.Thatsaltconsumptionistobepromoted.

34.(70)

35.(78)

36.

Theeffectsofalmostuniversalemploymentwereoverwhelminginthat______.

A.thehouseholdandvillagecommunitydisappearedcompletely

B.mennowtravelledenormousdistancestotheirplacesofwork

C.youngandoldpeoplebecamesuperfluouscomponentsofsociety

D.theworkstatusofthosenotinpaidemploymentsuffered

37.

WhereliessuccessofacountryintheNewAgeofSuperstuff?

A.Itliesinresearch.

B.Itliesininvestment.

C.Itliesininnovation.

D.Itliesinapplication.

38.(75)

39.

"Itwaslikeofferingtodropasafeonmyheadtocuremyheadache"inthelastbutoneparagraphmeansthat______.

A.dietechnician'sproposalwouldmaketilingsevenworse

B.thetechnician'sproposalcouldeventuallysolvetheproblem

C.filesstoredonhercomputerwerelikeasafe

D.erasingtheentiresystemwaslikecuringaheadache

40.

Accordingtothepassage,whichofthefollowingisnottrue?

A.SomeAmericanswouldnotacceptthevalueofconservationandenvironmentprotection,becausethisvaluewouldprobablymakethemunemployed.

B.ManyAmericanshavebeenusedtowasting,soitwillbedifficultforthemtoacceptthenewvalueofconservation.

C.SomeoldvaluesarestillhavingaverystronginfluenceonAmericanpeople,althoughtheyareharmfulinthisnewage.

D.MostAmericanshavefullyrealizedtheneedtoprotecttheenvironment,sotheyhavetakenmeasurestorecyclejunkedgoods.

四、閱讀理解(5題)41.

根據下列選項回答36～40題：

第

36

題

1.__________

42.

根據下列選項回答31～40題：

第

31

題

wasdevelopedtoprovideelectricityforsatellitesatthebeginning?__________

43.

第

50

題

Accordingtothispassage，whatisthemostexpensiveresourceinacorporation?

44.

第

44

題

combinesliberalartswithprofessionalstudiesandpromotesservicetoothers?__________

45.

根據下列文章回答21～25題：

第

21

題

Thebesttitleofthispassagecouldbe__________．

參考答案

1.Apuzzle

2.One

3.A

4.Borntrained．

5.A

6.D

7.Juniorcolleges/non-degreeprograms．

8.theirearlyyears

9.B

10.B

11.C

12.D

13.Totakeinformation．

14.A

15.B

16.therebythereby解析：本句句意為“我們也正在污染海洋，殺死了魚類，…剝奪了我們那無價的食物供應。”顯然，此空前后為因果關系，而且depriving前不能用so或其他表因果關系的連詞，而只能用介詞thereby。

17.werewere解析：考查被動語態的用法，注意分析句子成分。所以此處應填“were”。

18.itit解析：本句意為“‘污染’意思是弄臟——表層土或什么東西，通過引進雜質，這使…不健康或不干凈。”顯然，此空處應指topsoilorsomething，因為前面已出現，所以用it來代替。

19.amongamong解析：此句意為“后一種觀點得到了許多支持者，尤其…教育家。”顯然，空處應填“在…中”，介詞among即有此意。

20.lessless解析：由此空前面的“deterioratedsharply”可知此空應填“更少的”，而不是“更多的”。

21.thatthat解析：此空后的內容為maintain的內容，即此空后的句子為maintain的賓語，應填一個可引導賓語從句的詞。

22.farfar解析：可用于修飾“toolittle”的只能是far，意為“太少，特別少”。

23.betweenbetween解析：“…relation…actionsandtheirconsequences”意為“…行動和它們的結果…關系”，空處顯然缺“之間”。

24.outout解析：handout意為“分發，施舍”，為固定短語。

25.differencedifference解析：顯然，這句話是在對老年人和年輕人寫字之間進行比較，而且由后半句中的"getbette