2025年广西壮族自治区河池市凤山县七下英语期中考试模拟试题含答案

2025年广西壮族自治区河池市凤山县七下英语期中考试模拟试题满分120分，时间90分钟一、完形填空(10分)1、阅读下面短文，掌握其大意，然后选出最佳选项。Onceuponatime,therewasapooryoungman.Hewasnot_____1_____abouthislife.Everyday,hesatoutsidehis_____2_____houseandsaid,“IfIwererichenough,Iwould_____3_____whateverIwant.Nicefood,beautifulclothes,bighousesand…”Hewantedsomanythings.Oneday,asusual,hecomplained(抱怨),“IfIhadalotof_____4_____,Iwouldhaveabetterlife.”Anoldmanpassedbyandheardthose_____5_____.Hewalkedtowardtheyoungman’shouse,stoppedand_____6_____theyoungman.“Whydoyousaythat?”saidtheoldman.“Youarerich!”“How?”askedtheyoungman.Hefeltvery_____7_____.“Let’ssee,”saidtheman.“Wouldyouliketogiveyourbrighteyestome?Iwillgiveyoualotofmoney.”“No,never!”theyoungmananswered.Then,theoldmanhadanother_____8_____.“Or,givemeyourstronglegs.I’llgiveyoulotsofgold.”“Noway!”Again,theyoungman_____9_____atonce.Theoldmansmiled.“Nowyousee,youareveryrich!”Aftersayingthat,hewalkedaway_______10_______.1.A.happy B.sad C.sorry D.angry2.A.new B.green C.warm D.little3.A.sell B.work C.buy D.study4.A.books B.flowers C.money D.water5.A.words B.stories C.songs D.lessons6.A.lookedfor B.lookedat C.lookedup D.lookedaround7.A.surprised B.bored C.tired D.worried8.A.idea B.time C.dream D.hope9.A.asked B.answered C.taught D.smiled10.A.excitedly B.quietly C.heavily D.carefully二、阅读理解（40分）2、Animalsareourfriends.Nowalotofpeopleliketokeepsmallanimalsaspetsintheirhouses,suchascats,dogs,birdsandsoon.Peopleliketokeepdogsbest,nextisthecats,andthelastisthebirds.Becausethesepetsareverycuteandfriendly.Oldpeoplehavetheseanimalsastheirfamilymembers(成员)becausetheydon’tlivewiththeirchildren.Orpeoplewithnochildrenwouldliketokeepthethesesmallanimals.Theyarelikepeople’schildren.Peoplegivethesepetsnicenamesandletthemwearbeautifulclothes.Theybuynicefoodforthem,too.Peoplekeepthesepetscleaneveryday.Theylovethemverymuch.Childrenalsoliketokeepthesepets.Theyareliketheirfriends,brothersandsisters.Childrencanplay,sleepandtakeawalkwiththesepets.Sometimeswhenchildrenareunhappy,petswilllistentothemandalwaysbethere.Sopetsaretheirbestfriends.Theylovethemverymuch.Petsareallveryhappy.Theyhavehousesandbeds.Theyhavemuchnicefoodtoeat.Theycanwalkwithpeopleintheparkorgoouttorelax.Doyouthinkpetsareimportantinourlife?Wouldyouliketokeepapetinyourfamily?1.Theunderlineword“They”refersto(指代)“________”.A.smallanimals B.oldpeopleC.peoplewithnochildren D.children2.Oldpeoplekeeppetsbecause________.A.theyhavenochildren B.petsarelikeoldpeopleC.petsareverycuteandfriendly D.theydon’tlivewiththeirchildren3.Childrencan________.A.keeppetscleaneveryday B.play,sleepandtakeawalkwithpetsC.listentopets D.wearbeautifulclothesforpets4.FromPara2,Para3andPara4,wecanknow________.A.peoplebuynicefoodforpetseverydayB.petscanhelpchildrenwhentheyareunhappyC.petsarehappytowalkwithpeopleintheparkD.peopleandpetsloveeachother5.Thebesttitleofthepassageis“________”.A.Smallanimals B.Petsandpeople C.Petsareimportant D.Dogs,catsandbirds3、ThisisaphotoofMr.Black’sfamily.ThemaninabrownjacketisMr.Black.Heisadoctor.ThewomaninawhitedressisMrs.Black.Sheisateacher.Theyhaveasonandadaughter.Thesonisbehind(在……后面)Mr.black.HisnameisJack.HeisinagreenT-shirtinthephoto.ThegirlnexttoJackisJack’ssister,Kate.Sheisinaredskirtinthephoto.JackandKateareinthesameschool,buttheyareindifferentgrades.JackisinGradeSixandKateisinGradeFive.Theyaregoodstudentsandtheystudyeverysubjectverywell.1.Whoisthemaninabrownjacket?A.HeisJack’sfather. B.HeisJack’sfriend.C.HeisKate’steacher. D.HeisMrs.Black’sfriend.2.WhatclothesisJack’smomin?A.Ajacket. B.Adress. C.Ashirt. D.Askirt.3.WhereisKateinthephoto?A.NexttoMr.black. B.BehindMr.Black.C.BehindJack. D.NexttoJack.4.Thereare________peopleinthephoto.A.six B.five C.four D.three5.What’sthebesttitle(最佳标题)forthepassage?A.Mr.Black’sFamily B.Jack’sSchool C.AGoodTeacher D.Kate’sFamily4、GoodnewsFREESOCCERTRAININGCLASSAreyouinterestedinplayingsoccer?King’sSchoolhasasoccerclubforchildrenfrom12to15yearsold.TheclubwillhavefreesoccertrainingclassesinApril!Time:From3:00p.m.to5:00p.m.everySundayPlace:CitySportsCenter,267StateStreetCost:FreePlayersfromtheCitySoccerTeamwillbeyourteachers!Intheclub,youwillbeabletolearnthesoccergamerules,improvesoccerskillsandmakenewfriends!Ineverysoccertrainingclass,youneedto●comewithyourownsoccerball●wearsportsclothesandsoccershoes●bringenoughwaterIfyouwanttoknowmore,pleasecallusaore-mailusatksoccerclub@1.Thesoccerclubisfor________.A.childrenplayingsoccerwell B.childrenfrom12to15yearsoldC.childrenfromKing’sSchool D.childrenlivingnearCitySportsHall2.Theteachersofthesoccerclubwillbefrom________.A.King’sSchool B.CitySportsCenterC.theCitySoccerTeam D.theschoolsoccerteam3.Everysoccertrainingclasswilllastfor________.A.twohours B.threehours C.fourhours D.fivehours4.Ifyouwanttojointhesoccerclub,youneedto________.A.bringtwosoccerballs B.arrivetenminutesearlierC.knowthesoccergamerules D.wearsportsclothesandsoccershoes5.Youmayseethisposterin________.A.astorybook B.aschoolnewspaperC.asciencereport D.azooguide5、配对阅读。请根据左栏中人们的需求，在右栏中找出符合需求的地点选项。___1___Nick’sfather’sbirthdayisnextweek.Hewantstogethisfatherawatch.___2___Ginalostherpenthismorning.Shewantstobuyanewone.___3___Sallywantstogotoherfriend’sparty.Sheneedstobuyanicedress.___4___Jackisgoingtovisithisgrandfatherinhospital.Hewantstobuysomefruit.___5___Mrs.Wangwantstocookagoodmealforherfamily.Sheneedssomevegetablesandmeat.A.Wehavedifferentkindsoffruitinourstore:bananas,strawberries,apples,oranges,pearsandsoon.Theyarereallygreat.B.Comeandbuyyourschoolthingsatourgreatsale!Wehaveniceschoolbags,notebooks,pens,erasersandsoon.C.Thebasketballs,soccerballs,baseballsandvolleyballsinourstoreareonsaleforaweek.Andwehavesportsbagsandsportsshoes,too.Theyareallverynice!D.Doyouneedsomefreshvegetablesandmeat?Wehavetomatoesforonly5yuanakilo.Howmuchisthebeef?Only90yuanakilo.E.Bigsale!Wesellallourclocksandwatchesatverygoodpricestoday!Theyareallverynice.F.Doyoulikereading?Wehaveeverythingyouwantinourbookstore.Somepopularbooksareatourgreatsalethisweek.Comeandbuyyourfavorite!G.ComeandbuyyourclothesatXinxin’sClothesStore!Doyouwantdresses?Wehavebeautifuldressesindifferentcolorsforonly$23.Andjacketsareonly$28!三、补全对话（10分）6、

请通读下面对话，根据对话内容，从文后的选项中选出能填入空白处的最佳选项，选项中有一项为多余选项。A:Hello,thisisMaryspeaking.IsthatTom?B:Yes,thisisTom.A:____1____B:IamreadingabookcalledHarryPotter.A:Whatdoyouthinkofit?B:____2____Itisworth(值得)readingasecondtime.A:IhearthatthemovieHarryPotterisonatthecinema.____3____B:Yes,I’dloveto.____4____A:Let’srideourbikestothecinema.Ithinkit’sagoodwaytokeephealthy.B:OK.____5____A:Let’smeetattheschoolgateat7:00a.m.tomorrow.B:OK.Seeyoulater.A:Seeyou.A.Whatareyoudoing?B.Whenandwhereshallwemeet?C.Howdowegetthere?D.Wouldyouliketogotothemovieswithme?E.Howaboutridingourbikestothecinema?F.Ithinkitisexcellent.四、短文填空（10分）7、

ThereisanappletreeanditlovesalittleboynamedHenry.Henryalsolikestocomeandplayaroundit.Oneday,littleHenryneedsatoytoplaywith,buthehasnomoney,sothetreeaskshimtosell(卖)alltheapplesonthetree.____1____Thentheboygrowsup(长大)daybyday.Hebecomesaman.____2____Thetreeisverysad(难过).____3____“Comeandplaywithme!”thetreesays.“No,IhavetoworkbecauseImustbuyabighouse.____4____”themanasks.“Sorry,Ihavenohouse,butyoucancutdown(砍下)allmybranches(树枝)andthetrunk(树干).Youcanbuild(修建)thehousewiththem”thetreeanswers.____5____Aftermanyyears,themanbecomesolder,andhecomesbackagain.“Ionlyhavethestump(树桩),butyoucanhavearest,”thetreesays.Remember(记住)tolovethepeoplewholoveyouatanytime!A.Canyouhelpme?B.Atlast,theboygetsthetoyhappily.C.Sothemangetsthehouse.D.Onesummerday,themanreturnsandthetreeisveryhappy.E.Andhedoesn’tgotoseethetreeforalongtime.五、语法填空（10分）8、阅读下面短文，按照句子结构的语法性和上下文连贯的要求，从各题所给的A,B,C和D项中选出最佳选项。TheEarthisourhome.Wemusttakecareofit.Lifetodayiseasierthanitwas___1___yearsago,butithasbroughtsomenewproblems.Oneofthebiggestproblemsispollution.Wecanseeit,smellit,drinkitandevenhearit.Pollutionproblems___2___moreandmoreseriousnow.Therearemanykindsofpollutionaroundussuchasairpollution,soilpollution,noisepollutionandlightpollution.Theyarebad___3___ourhealthinmanyways.Airpollutionfromindustryandcarsis___4___toourenvironment,whichcancausesoreeyesandbreathingproblems.Peoplethrowaway____5____rubbish.Rubbishiseverywhere.Itmakestheenvironment____6____.Noisepollutionisalsoaroundus,soit’sdifficultfor____7____tostudyorworkwell.Peoplemayevenlosetheirhearing____8____theyworkinanoisyplaceforalongtime.Toomuchnoisecancausehighbloodpressure(高血压)____9____.WehaveonlyoneEarth.Thepollutionproblemsare_____10_____seriousthatweshouldactnowtoprotecttheenvironment.Let’sstartoutsmallandmakeourhomemoreandmorebeautiful.1.A.hundred B.hundredsof C.hundredof D.hundreds2.A.arebecoming B.willbecome C.became D.becomes3.A.to B.in C.for D.of4.A.harm B.harmless C.harms D.harmful5.A.alot B.lotof C.lotsof D.lots6.A.dirt B.dirty C.dirtily D.dirtiest7.A.we B.us C.our D.ourselves8.A.before B.after C.if D.while9.A.also B.neither C.either D.aswell10.A.very B.quite C.much D.so六、阅读表达（10分）9、Goingonvacationisafunandrelaxingwaytospendtime.Doyouknowhowtohaveagreatvacation?Herearesometips.Decidewhereyou’dliketogo.Afewdaysorweeksbeforethevacation,makealist(列表)offiveplacesyouwanttovisit.Thenspendtimetalkingabouteachplacewithyourfriendsorparentsanddecideonyourfavoriteone.Thinkabouthowtogo.Thinkaboutwheretheplaceisandhowmuchyouwanttospend.Andyoumustgetenoughmoneyforyourvacation.Ifnot,youmaygetintotrouble.Findagreathotel.It’seasytogettiredduringthevacation.Soyourhotelshouldbeagoodplacetosleepandrelaxin.Youcantrytofindagoodhotelonline.Planyouractivities.Thinkabouteveryonewhoisgoingwithyou.Trytoplanactivitiesthatallofyoumayliketodo.Youshouldalsothinkabouthowlongyouwanttostaythere.Writedownthethingsyouneedtotake.Thinkaboutthethingsyouneedeverydaywhenyou’reaway,likeumbrellasandclothes.Don’tforgettotakeanythingnecessaryduringyourtravel.1.Whatshouldyoudofirstbeforestartingthetravelinthepassage?_______________________________________________________2.Howtochoosethetransportations(交通)foryourvacation?________________________________________________________3.Whyshouldwechooseagreathotelwhenweareonvacation?________________________________________________________4.Whoshouldyouthinkaboutwhenyouplanfortheactivities?________________________________________________________5.Howmanytipscanyouseeinthepassage?________________________________________________________七、书面表达（20分）

请根据要求完成短文写作。假如你是上文的王红，请你给Emma回复一封电子邮件，告诉她你本周六的计划。内容包括：作文要求：DearEmma,I’msorrytoknowyoubrokeyourlegandIhopeyou’llgetwellsoon.I’dliketotellyouaboutmyplanforthisSaturday._____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yours,WangHon

参考答案一、完形填空(10分)1、1.A2.D3.C4.C5.A6.B7.A8.A9.B10.C【解析】【导语】本文主要讲述了一个年轻人幻想过富裕的生活，却不知道自己其实很富有的故事。【1题详解】句意：他对自己的生活不满意。happy高兴的；sad伤心的；sorry抱歉的；angry生气的。根据下文“IfIwererichenough,Iwould...whateverIwant.”可知，年轻人并没有钱，因此他应该对自己的生活感到不开心。故选A。【2题详解】句意：每天，他坐在自己的小房子外面说。new新的；green绿色的；warm温暖的；little小的。根据下文“bighouses”可知，他坐在小房子外。故选D。【3题详解】句意：如果我足够富有，我会买我想要的一切。sell售卖；work工作；buy买；study学习。根据“IfIwererichenough”可知，如果足够富有，他应该会买他想要的一切。故选C。【4题详解】句意：如果我有很多钱，我的生活会更好。books书；flowers花；money金钱；water水。根据“IfIhadalotof...,Iwouldhaveabetterlife.”可知，年轻人在幻想如果有了钱，他会有更好的生活。故选C。【5题详解】句意：一位老人路过，听到了这些话。words话语；stories故事；songs歌曲；lessons课程。根据上文“Oneday,asusual,hecomplained(抱怨),‘IfIhadalotof...,Iwouldhaveabetterlife.’”可知，一位老人路过，应该是听到了年轻人说的话。故选A。【6题详解】句意：他走向年轻人的家，停下来看着年轻人。lookedfor寻找；lookedat看；lookedup查阅；lookedaround环顾四周。根据“Hewalkedtowardtheyoungman’shouse,stoppedand...theyoungman.”可知，老人应该是停下来看着年轻人。故选B。【7题详解】句意：他感到非常惊讶。surprised惊讶的；bored无聊的；tired疲惫的；worried担忧的。根据上文“Youarerich!”可知，年轻人对老人说的话感到很惊讶。故选A。【8题详解】句意：然后，老人有了另一个想法。idea主意；time时间；dream梦想；hope希望。根据下文“Or,givemeyourstronglegs.I’llgiveyoulotsofgold.”可知，老人又想出了一个主意。故选A。【9题详解】句意：年轻人又一次立刻回答。asked询问；answered回答；taught教；smiled微笑。根据“Noway!”可知，年轻人又一次立刻回答了老人的提议。故选B。【10题详解】句意：说完之后，他慢慢地走开了。excitedly兴奋地；quietly安静地；heavily慢慢地，沉重地；carefully仔细地。根据“Aftersayingthat,hewalkedaway...”可知，老人说完之后慢慢地走开了。故选C。二、阅读理解（40分）2、1.A2.D3.B4.C5.B【解析】【导语】本文主要介绍了许多人喜欢养小宠物，以及小宠物给人们带来的好处。【1题详解】词义猜测题。根据“Orpeoplewithnochildrenwouldliketokeepthethesesmallanimals.Theyarelikepeople’schildren”可知，they指代前文提到的“smallanimals”，故选A。【2题详解】细节理解题。根据“Oldpeoplehavetheseanimalsastheirfamilymembers(成员)becausetheydon’tlivewiththeirchildren”可知，因为老人没有跟他们的孩子一起居住，故选D。【3题详解】细节理解题。根据“Childrencanplay,sleepandtakeawalkwiththesepets”可知，孩子们可以和这些宠物一起玩耍、睡觉和散步，故选B。【4题详解】推理判断题。根据“Petsareallveryhappy.Theyhavehousesandbeds.Theyhavemuchnicefoodtoeat.Theycanwalkwithpeopleintheparkorgoouttorelax”可知，宠物喜欢和人在公园里散步，故选C。【5题详解】最佳标题题。通读全文可知，本文主要介绍了许多人喜欢养小宠物，以及小宠物给人们带来的好处，所以“宠物和人们”符合本文标题，故选B。3、1.A2.B3.D4.C5.A【解析】【导语】本文主要介绍了布莱克先生一家人的照片。【1题详解】细节理解题。根据“ThemaninabrownjacketisMr.Black”和“Thesonisbehind(在……后面)Mr.black.HisnameisJack”可知穿着棕色夹克的人是布莱克先生，即杰克的爸爸。故选A。【2题详解】细节理解题。根据“ThewomaninawhitedressisMrs.Black.”可知杰克妈妈穿着白色的连衣裙，故选B。【3题详解】细节理解题。根据“ThegirlnexttoJackisJack’ssister,Kate”可知凯特在杰克的旁边，故选D。【4题详解】细节理解题。根据“ThemaninabrownjacketisMr.Black.Heisadoctor.ThewomaninawhitedressisMrs.Black.Sheisateacher.Theyhaveasonandadaughter.”可知照片里有布莱克夫妇和一个儿子和女儿，一共四个人，故选C。【5题详解】最佳标题题。根据“ThisisaphotoofMr.Black’sfamily.”可知本文主要介绍了布莱克先生一家人的照片，故选A。4、1.B2.C3.A4.D5.B【解析】【导语】本文是有关免费足球培训班广告。【1题详解】细节理解题。根据“King’sSchoolhasasoccerclubforchildrenfrom12to15yearsold.”可知，这个课程是为12至15岁的儿童准备的，故选B。【2题详解】细节理解题。根据“PlayersfromtheCitySoccerTeamwillbeyourteachers!”可知，来自城市足球队的球员将成为你的老师，故选C。【3题详解】细节理解题。根据“Time:From3:00p.m.to5:00p.m.everySunday”可知，每节足球课持续两个小时，故选A。【4题详解】细节理解题。根据“Ineverysoccertrainingclass,youneedto●comewithyourownsoccerball●wearsportsclothesandsoccershoes●bringenoughwater”可知，如果你想加入足球俱乐部，你需要穿运动服和足球鞋，故选D。【5题详解】推理判断题。根据整个文章的理解及“Goodnews”可知，你可以看到这张海报在校报上，故选B。5、1.E2.B3.G4.A5.D【解析】【导语】本文主要针对不同人的不同需求推荐不同的地方。【1题详解】根据“Hewantstogethisfatherawatch.”可知，他需要买手表，选项E“大降价，今天我们以很优的价格卖各种各样的钟表和手表。他们很精美。”符合语境。故选E。【2题详解】根据“Ginalostherpenthismorning.Shewantstobuyanewone.”可知，她要买钢笔。选项B“来以最大的优惠买你的学习用品，我们有精美的书包，笔记本，钢笔，橡皮等等。”符合语境。故选B。【3题详解】根据“Sheneedstobuyanicedress.”可知，她要买连衣裙，选项G“来欣欣衣服店买衣服。你想要连衣裙吗？我们有不同颜色的漂亮连衣裙，只要23元，夹克衫仅要28元。”符合语境。故选G。【4题详解】根据“Hewantstobuysomefruit.”可知，他要买水果。选项A“我们有不同种类的水果在店里，香蕉，草莓，苹果，桔子，梨等。他们真的很好。”符合语境。故选A。【5题详解】根据“Sheneedssomevegetablesandmeat.”可知，她要蔬菜和肉。选项D“你需要一些新鲜的蔬菜和肉吗？我们有5元一斤的西红柿。牛肉多少钱？仅要90元一斤。”符合语境。故选D。三、补全对话（10分）6、1.A2.F3.D4.C5.B【解析】【导语】本文是A和B在打电话的情景。他们谈论了《哈利波特》这本书，并决定一起去电影院观看电影《哈利波特》。【1题详解】根据“IamreadingabookcalledHarryPotter.”可知空处应询问对方在做什么事，选项A“你在做什么事？”符合语境，故选A。【2题详解】根据“Whatdoyouthinkofit?”可知空处应对此进行回答，表明自己对这本书的看法，选项F“我认为它很棒。”符合语境，故选F。【3题详解】根据“Yes,I’dloveto.”可知上文在邀请对方去看电影，选项D“你想要和我一起去看电影吗？”符合语境，故选D。【4题详解】根据“Let’srideourbikestothecinema.Ithinkit’sagoodwaytokeephealthy.”可知此处谈论的是去电影院的方式，故上文应提问交通方式，选项C“我们如何到哪里？”符合语境，故选C。【5题详解】根据“Let’smeetattheschoolgateat7:00a.m.tomorrow.”可知此处回答的是见面的时间和地点，故上文应就此来提问，选项B“我们什么时候在哪儿见面？”符合语境，故选B。四、短文填空（10分）7、1.B2.E3.D4.A5.C【解析】【导语】本文主要讲述的是一棵苹果树和一个小男孩之间的故事。【1题详解】根据“buthehasnomoney,sothetreeaskshimtosell(卖)alltheapplesonthetree.”可知，苹果树让男孩卖掉树上的苹果来买玩具，选项B“最后，男孩高兴地得到了玩具。”符合语境。故选B。【2题详解】根据“Thentheboygrowsup(长大)daybyday.Hebecomesaman…Thetreeisverysad”可知，空处应填表示苹果树难过的原因，选项E“他很长时间没有去看苹果树了。”符合语境。故选E。【3题详解】根据“‘Comeandplaywithme!’thetreesays.‘No,IhavetoworkbecauseImustbuyabighouse.”可知，男孩去看苹果树了，选项D“一个夏天，男人回来了，苹果树非常高兴。”符合语境。故选D。【4题详解】根据“becauseImustbuyabighouse…themanasks”可知，此处是男人向苹果树问的问题，选项A“你能帮助我吗？”符合语境。故选A。【5题详解】根据“butyoucancutdown(砍下)allmybranches(树枝)andthetrunk(树干).Youcanbuild(修建)thehousewiththem”可知，苹果树让男人把自己的树枝和树干用来建房子，选项C“所以男人有了房子。”符合语境。故选C。五、语法填空（10分）8、1.B2.A3.C4.D5.C6.B7.B8.C9.D10.D【解析】【导语】本文主要讲了现如今的环境污染问题，呼吁人们保护环境。【1题详解】句意：今天的生活比几百年前更容易，但它也带来了一些新的问题。hundred百；hundredsof数以百计的；hundredof错误搭配；hundreds百的复数。根据“itwas...yearsago”可知，用hundredsof表概数，故选B。【2题详解】句意：污染问题现在变得越来越严重。arebecoming现在进行时；willbecome一般将来时；became动词过去式；becomes动词第三人称单数形式。根据“now”可知用现在进行时，结构为“am/is/are+动词现在分词”，主语为“Pollutionproblems”，be动词用are，故选A。【3题详解】句意：他们在许多方面对我们的健康有害。to朝；in在……里面；for对于；of……的。bebadfor意为“对……有害”，故选C。【4题详解】句意：来自工业和汽车的空气污染对我们的环境是有害的，这可以引起眼睛疼痛和呼吸问题。harm损害，动词原形或名词；harmless无害的，形容词；harms损害，动词第三人称单数形式；harmful有害的，形容词。is后接形容词作表语，beharmfulto意为“对……有害”，故选D。【5题详解】句意：人们扔掉许多垃圾。alot许多；lotof错误搭配；lotsof许多；lots许多。alotof=lotsof“许多”，可修饰可数名词复数或不可数名词。故选C。【6题详解】句意：它使环境变得很脏。dirt灰尘，名词；dirty脏的，形容词；dirtily脏地，副词；dirtiest最脏的，形容词最高级。makesth.+adj.意为“使某物变得……”，此处无比较之意，所以用形容词原级，故选B。【7题详解】句意：噪音污染也在我们身边，所以我们很难好好学习或工作。we我们，人称代词主格；us我们，人称代词宾格；our我们的，形容词性物主代词；ourselves我们自己，反身代词。for后用人称代词宾格us。故选B。【8题详解】句意：如果人们在一个嘈杂的地方工作很长一段时间，他们甚至可能失去他们的听力。before在……之前；after在……之后；if如果；while当……时。“他们在一个嘈杂的地方工作很长一段时间”是“甚至可能失去他们的听力”的条件，所以用if引导条件状语从