2025届北京市海淀区清华大附中八下英语期末达标检测试题含答案

2025届北京市海淀区清华大附中八下英语期末达标检测试题满分120分，时间90分钟一、单项选择（共10小题，满分20分）1、Ifeelithardtokeepupwithmyclassmates.Butmyteachersalwaysencourageme,soIthinkIshould________.A.giveup B.carryon C.tryon D.puton2、—MustIfinishmyhomeworknow?—No,you________.Youcangohomenow.A.needn’t B.mustn’t C.shouldn’t D.can’t3、B【解析】【详解】句意：看到一只鸟在窗边休息，男孩悄悄地移动去看了看。考查副词辨析。politely有礼貌地；quietly安静地，悄悄地；safely安全地。根据“Seeingabirdrestingbythewindow”可知男孩是悄悄地移动过去。故选B。4、Ididn’thavea________,soIgaveupbuyingmyfavoritescarf.A.cent B.sign C.rock D.deal5、—Ifeel________tired________Ican’tclimbtothetopofthemountain.—It’sapitythatyoucan’tseethecloudsea.A.so;that B.such;that C.too;to6、NowadaysWeChatmakesitconvenienttocommunicate_________others.A.for B.of C.about D.with7、Shewas________ane-mailfromherfriendthewholemorning,butitdidn’tcome.A.explaining B.expressing C.experiencing D.expecting8、—Canyoutellme________?—Noworry!Icanmakeitmyself.A.ifyouneedhelptocompletetheworkB.whencanyoufinishtheworkC.whatyouneededtocompletethework9、—Whatshouldwedoforthedisabledchildren?—Youshould_________astudygrouptohelpthem.A.takeup B.lookup C.setup D.putup10、Oneofthebestwaysforpeopletokeephealthyisto________goodeatinghabits.A.grow B.develop C.improve D.find二、完成句子（共5小题，满分10分）11、你能帮助那些有需要的人，真是太善良了。________verykind________you________________thoseinneed.12、Helikesm_________buildingsbetterthanancientones.13、Thecollectionofdollshas________________(占去)halfofmysister’sbedroom.14、bridge,long,the,about,twenty,is,meters________________________________.15、英汉互译阅读下面的短文，将划线部分译成英文或中文。ThecoldestandmostdifficultplaceintheworldtoliveisAntarctica(南极洲).ItisthelandofsnowandiceneartheSouthPole(南极).Mostpeopledonotthinkthereismuchlifeintheicywatersaroundit.Theyarewrong.Actually,therearemorethanonehundreddifferentkindsofanimalsthere.ThemostfamousanimalofAntarcticaisthepenguin(企鹅).1.HalleyBay(哈雷湾)wastheworld’ssecondlargesthomeforpenguins.However,2.企鹅现在处于极大危险中。Recently,scientistsfoundthatthenumberofpenguinshasdroppedquickly.OneofthemainreasonsisthatmanystormshitHalleyBay.3.Thousandsofbabypenguinsdiedfromtheterribleweather.Scientistsfeelworriedaboutthis.HalleyBayusedtobeasafeplaceforpenguinsbutnowitisn’t.Luckily,anotherhomeofpenguinshasgottenmuchbigger.4.为了保持安全，许多企鹅已经搬到那里了。Althoughpenguinsmayhavegreaterchancetokeepalive,theyarestillfacingthedangerofdyingout.5.Unlesswedosomething,theywon’thaveanywheretogooneday.1._____________________________________________2._____________________________________________3._____________________________________________4._____________________________________________5._____________________________________________三、补全对话（10分）16、根据下面的对话情景，在每个空白处填上一个适当的句子，使对话的意思连贯、完整。A:Goodevening,sir.WelcometoMaxim’s.___1___?B:Well,I’vebookedatablefortwounderthenameofMr.White.A:Pleasewait.Letmecheck.OK.Pleasefollowmetoyourtable.（Afterawhile,theysatdown.）A:___2___?B:OK.MywifewouldlikeafruitsaladandI’llhaveabowlofbeefsouptostartwith.Arethereanyvegetablesinthesoup?A:___3___.Andwhatsizedoyouwant?B:___4___.A:Whatelsedoyouwant?B:Letmesee.We’lltrytheRussianSteakforthemaincourse(主菜).A:Gotit.___5___B:Yes,twoglassesoforangejuice.That’sall.Thankyou.A:Youarewelcome.Haveanicemeal.四、阅读理解（40分）17、Swans(天鹅)arealsocalledtheGreatWhiteSwans,amajorcharacteristicshapeofbirds,thegreatestlengthof1.5metersandweighingmorethan15kilogramscanbe.Theirwingspans(翼幅)canbeover3.1meters.Swansusuallyhavewhitebodyfeathers,ablackoryellowmouthandblacknose.Theyhavealongthinneck.Theyarealsoheavy-bodied,big-footedbirds.Theyarelargerthanthegeese.Immaturebirdswearmottled(斑驳的)grayorbrownfeatherfortwoormoreyears.Adultsalsohaveanunfeatheredskinbetweentheeyesandmouth.Youngswansareabletorunandswimforafewhoursaftertheywereborn,buttheyalsoneedtobecarefullylookedafterforseveralmonths.Swansmature(成熟)inthethirdorfourthyearandmaylivefor20yearsinthewildand50yearsormoreincaptivity(圈养).根据短文内容，选择最佳答案。1.Paragraph2ismainlyaboutswans’________.A.looks B.abilities C.personalities2.Aswaninthewildmaylivefor________.A.twoyears B.morethantwoyears C.20years3.Wheredoesthepassageprobablycomefrom?A.Afilmguide. B.Astorybook. C.Ananimalmagazine.18、EarthisoftencalledtheBluePlanet.That’sbecauseaboutthree-fourthsoftheearthiscoveredbywater.Peoplethinkwearenotshortofwater.Infact,theyarewrong.Mostofthewaterissaltwater.Wecanfinditintheworld’soceans.Onlyabout3%isfreshwaterthatwecandrink.Althoughyoumightthinkthatmostofthefreshwaterontheearthisfoundinthelakesandrivers,infact,lessthan1%ofthefreshwatercanbefoundintheseplaces.Around70%oftheearth’sfreshwaterisiceinthepolar(极地的)places.Theyarefarfromus.Andthewaterthereistoughtotransport(运输).Thesecondgreatestsource(资源)offreshwaterontheearthisundertheground.Thiskindofwateriscalledgroundwater.Placesthatdon’thavefreshwaterfromriversandlakesdependongroundwaterfordrinkingandotheruses.Groundwateralsocan’tgetawayfrompollution.Chemicals(化学制品)thatareusedinfarmingandfactoriescangetintotheground.Theearthhaslittleusablewater.Luckily,eachofuscandosomethingtosavewater.Kidsandadultsaresavingwaterwiselyintheirowncommunities(社区).Ifweworktogether,wewillhaveabetterworld.1.Whatpercentageoftheearthiscoveredbywater?A.About25%. B.About75%. C.About43%. D.About85%.2.Whatdoestheunderlinedword“tough”inParagraph2mean?A.Dangerous B.Common. C.Difficult. D.Easy.3.Whichonecanleadtothepollutiontoundergroundwateraccordingtothepassage?A.Chemicals. B.Ice. C.Rubbish. D.Rain.4.WhichofthefollowingisTRUE?A.Peoplearenotshortofwater.B.Mostofthewaterinoceansisfreshwater.C.Wecanfindmostofthefreshwaterintheriversontheearth.D.About70%oftheearth’sfreshwaterisiceinthepolarplaces.5.Thepurpose(目的)ofthepassageisto________.A.tellthesituationoffreshwaterontheearth B.askpeopletosavewaterC.introducedifferentkindsofwaterontheearth D.talkaboutthepollutionontheearth19、Buyingsecond-handproductsisbecomingmorepopularthesedays.Onemillionpeoplearesellingover2millionsecond-handproductsfromclothingandbookstoelectronicproductsonXianyueveryday.Peoplehavemademoremoneyinrecentyearsandboughtmorethingsthantheyreallyneed,accordingtoaspeechgivenbyWeiYing,founderofthesecond-handbook-tradingsite.Asmorepeopleturntoaminimallifestyle,theyaresellingtheirusedproductsforcheap.Shoppersareattractedtothelowprices,aswellasthefactthatbuyingsecond-handisgoodfortheenvironment.WhenChenJunjun,22,acollegestudentinShanghai,wantstobuybooks,sheusesXianyu.Shesearchesforthebooksshewantsandadds(添加)themtohershoppingcart,justlikeTaobao.Thedifferenceisthatthebooksaremuchcheaper—asmuchas70%cheaperthannewbooks.“SinceIdon’thaveenoughspendingmoney,it’saperfectchoiceforme,”Chensaid.LotsofpeoplelikeChenarebuyingsecond-handbooks.Xianyuhasover3millionusersandsellsabout20,000second-handbookseveryday,BeijingDailyreported.Besideslowerprices,peoplecanalsofindout-of-printbooks.YanMinjun,21,isareader.ShehasboughtmanyclassicversionsofbooksonXianyu,suchasacopyofPrideandPrejudicethatwaspublishedbyPeople’sLiteraturePublishingHousein1993.“Ilookedforitforalongtime.NowIhaveit!”shesaid.Buyingoldbookscanevenconnectreaders.ZhaoKaiqi,a22-year-oldcollegestudentinHarbin,Heilongjiang,oncefoundanoteinasecond-handbookshebought.“ItsownersharedherthoughtsandhopedIwouldenjoyit.Itwassogood,”Zhaosaid.“Iwanttodothesamethinginthefuture,too.”1.Whatcanyoubuyonthesecond-handsite?A.Acamera. B.Freshfruit. C.Atrainticket. D.Medicine.2.Whichofthefollowingwordhasthesamemeaningastheunderlinedword“minimal”?A.wasteful B.simple C.poor D.rich3.Whatismakingsecond-handshoppingpopular?①Newexperience.②Safershoppingchoices.③Lowerprices.④Environmentalbenefits(效益).A.①② B.②③ C.①④ D.③④4.Ifyouwanttosellabookof¥30onthesecond-handsite,thepriceshouldbe________.A.¥10 B.¥21 C.¥4 D.¥305.What’sthemainideaofthestory?A.Second-handshoppingsitesarenew.B.Therearedisadvantagestobuyinguseditems.C.Usingsecond-handthingscanprotecttheenvironment.D.Buyingsecond-handthingsisbecomingmorepopular.20、Everyonehastheirfavoritefood.Somemightlovechocolate.Somemightlovepotatochips.Thinkaboutyourfavoritefood.Haveyoueverwonderedwhyyourfavoritefoodtastessodelicious?Theanswerisaboutyourtongue(舌头)andnose.Therearesometastebuds(味蕾)onyourtongue.Theygiveyouthesense(感觉),therearemanytinyhaironthetastebuds.Thesetinyhairssendmessages(A)________yourbrain(大脑)abouthowsomethingtastes.Inthisway,youknow(B)________itissour(酸),sweet,bitter(苦)orsalty.personhasabout10,000tastebuds.Theykeepworkingallthetimewhenweenjoyourfood.Thetastebudsdon’talwaysstaythesame.Theyarereplaced(更新)abouteverytwoweeksorso.However,asapersongetsolder,someofthesetastebudsdon’tgetreplaced.Theoldmayonlyhave5,000workingtastebuds.That’swhysomefoodsmaytastestrongerforyouthantheydofortheold.Besidesyourtongue,yournosealsohelpsyoulearnaboutthetasteoffood.Sometimes,strongsmellscanevenconfuse(使困惑)yoursenseoftaste.Sonexttimeyouenjoysaltypizza(披萨)andsweeticecream,thankyourtongueandyournose.Withoutthesenseoftaste,lifewillbeboring.阅读短文,根据短文内容完成下列任务。1.请根据短文内容,分别写出(A)、(B)处所缺单词(A)________(B)________2.阅读短文，从短文中找出与下面句子意思相近的句子。Theyworkallthetimewhileweenjoythefood._____________________________________3.请把上文中划线的句子翻译成汉语。_____________________________________4.请根据短文内容回答下列问题。Howwillpeoplefeeliftheydon’thavethesenseoftasteinthelife?_____________________________________5.根据文章内容。完成短文，每空—词。Fromthepassage,youknowthatyourtongueandyournose________youknowwellthetasteoffood.Withoutyourtongueandyournose,youwon’thavethesenseoftaste.Especially,yourtastebuds(味蕾)________sinceyouwereborn.Theyarereplaced(更新)everytwoweeks________________.However,whenyougetolder,someofyourtastebudsdon’tgetreplaced.Soolderpeoplehave________tastebudsthanyoungerpeople.That’swhysomefoodsmaytastestrongerfortheyoungthantheydofortheold.五、完形填空（10分）21、先通读下面短文,掌握其大意,然后从A、B、C、D四个选项中选出一个可以填入相应空白处的最佳答案。先通读短文，掌握其大意，然后从A、B、C、D四个选项中选出一个可以填入相应空白处的最佳答案。Itwasnineonacoldwinternight.Ihurriedto___1___homefromworkonmymotorbike.Atthelastcrossing,___2___Iwaswaitingforthegreenlight,Isawanoldmanwalkingtowardsme.HestoppedmeandIfeltalittle___3___becauseIdidn’tknowhim.Theoldmansaidslowly,“Excuseme.Couldyoupleasehelp___4___?”Ilookedathimupanddown.Helookedabout70yearsold.Theoldmantookouttenyuanandsaidtome,“Youseetheoldladyoverthere?She’ssellingbakedsweet___5___.Couldyoujust___6___themoneyandbuyonefromher?”Hepointedatanoldlady___7___somethingaboutfiftymetersawayoverthere.“Butwhydon’tyougoandbuyit___8___?”Iwaspuzzled（迷惑的）.Theoldmancontinued,“Thatoldladyismy___9___andit’sherfirstdaytosellbakedsweetpotatoes.JustnowIcalledher.Shetoldmethattherewasonlyonesweetpotatoleftandshewouldn’tgohomeuntil___10___thesweetpotatoesweresoldout.ButIknowthatshecan’t___11___thecoldbecauseherlegshurt.I’mveryworried___12___her.”Atthattime,I___13___whytheoldmanaskedmetobuyhiswife’ssweetpotato.Ifeltreallywarmandmoved.Withouttakingthemoney,Irodetotheoldladyquicklyandboughtthe___14___one.WhenIwaved(挥手)goodbyetotheoldman,Icouldseehimstandingtherewithathankful___15___.1.A.get B.go C.walk D.leave2.A.while B.although C.because D.unless3.A.sad B.nervous C.relaxed D.stupid4.A.it B.him C.her D.me5.A.tomatoes B.cakes C.potatoes D.bananas6.A.send B.lend C.bring D.take7.A.selling B.tasting C.cooking D.making8.A.myself B.yourself C.herself D.himself9.A.cousin B.sister C.wife D.friend10.A.every B.none C.all D.neither11.A.stand B.change C.believe D.fear12.A.in B.to C.about D.at13.A.imagined B.understood C.forgot D.meant14.A.first B.second C.next D.last15.A.smile B.day C.call D.life六、阅读表达（10分）22、Everymorningyougetup,washyourface,brushyourteeth,eatbreakfastandgetreadyforyourday.Thedailyactionsaresocommonthatyoudon’tthinkaboutthemmuch.Butwhatifyouwereinspace?Whenastronautsareinspace,theyeat,sleep,wash,workandplay.Theydothesamethingsasus,buttheydothemdifferently.OnEarth,weputfoodonaplateandwaterinaglass.Gravity（引力）holdsthefooddownandkeepsthewaterintheglass.Butinspace,thereisalmostnogravity.Sofoodcanmovesslowlyintheair,andastronautsmusteatanddrinkcarefully.Theyhavespecialplatessothattheirfooddoesn’tfloataway.Theyusespecialbagsfordrinkssothatthedrinkstaysinside.Sleepingisverydifficultinspace.Someastronautsliketomoveintheair,butmostliketobeinasleepingbag.Theytiethebagstoawallsothattheydon’tflyintheairatnight.Thesunrisesandsetssooftenthattheastronautsuseaclockormusictowakethemup.Exerciseisveryimportantinspace.OnEarth,yourlegscarryyourbody,butinspace,astronautsflyintheair,sotheydonotusetheirlegs.Thisisverybadfortheirlegs.Sotheymustexerciseforthirtyminuteseveryday.Theyoftenuseanexercisebicycleforthis.Afteraday’swork,astronautsrelax.Theymaylistentomusic,read,watchfilms,playgames,ortalktotheirfriendsandfamiliesonradio.Themostpopularpastimeislookingoutofthewindow,lookingatthespaceandwatchingtheearth.1.Wheredoastronautsputtheirdrinksinspace?______________________________________2.Howlongmustastronautsexerciseeverydayinspace?______________________________________3.请将文中画线的句子翻译成汉语。______________________________________4.请给短文拟一个适当的英文题目。______________________________________七、书面表达（20分）根据所提供的图画情景，写出5个与图画主题相关的完整句子。56.A:What’sthematterwithyou,Jack?B:________________________.

参考答案一、单项选择（共10小题，满分20分）1、B【解析】【详解】句意：我觉得很难跟上我的同学。但是我的老师总是鼓励我，所以我认为我应该继续下去。考查动词短语辨析。giveup放弃；carryon继续；tryon试穿；puton穿上。根据“Butmyteachersalwaysencourageme,soIthinkIshould”可知，在老师的鼓励下应该继续下去，故选B。2、A【解析】【详解】句意：——我必须现在完成我的作业吗？——不，你不必。现在你可以回家。考查must的用法。needn’t不需要；mustn’t禁止；shouldn’t不应该；can’t不能。由must引导的一般疑问句，否定回答由“needn’t”或“don’thaveto”来构成。故选A。3、Thedolphin’sskinseemsmuch________thanthecrocodile’s.A.smarter B.stricter C.smoother4、A【解析】【详解】句意：我身无分文，所以我放弃了买我最喜欢的围巾。考查名词辨析。cent分币；sign标志；rock石头；deal交易。根据“soIgaveupbuyingmyfavoritescarf.”可知因为自己没有钱，所以没有买最喜欢的围巾，此处是强调自己身无分文，故选A。5、A【解析】【详解】句意：——我觉得太累了，无法爬到山顶。——很遗憾你看不到云海了。考查连词辨析。so…that…如此……以致于……，so修饰形容词或副词；such…that…如此……以致于……，such修饰名词；too…to…太……而不能……。根据语境可知，表达的是“如此累，以致于爬不到山顶”，且修饰形容词tired，所以应填so;that。故选A。6、D【解析】【详解】句意：如今，微信让与他人交流变得更加方便。考查介词辨析。for为了；of……的；about关于；with和。communicatewithsb“和某人交流”，固定短语。故选D。7、D【解析】【详解】句意：她整个上午都在等她朋友的电子邮件，但没有发来。考查动词辨析。explain解释；express表示；experience经历；expect期待。由下文“butitdidn’tcome.”可知，她整个早上在期待一个来自朋友的邮件，故选D。8、A【解析】【详解】句意：——你能告诉我你是否需要帮助来完成这项工作吗？——不用担心！我可以自己做。考查宾语从句。ifyouneedhelptocompletethework你是否需要帮助来完成这项工作；whencanyoufinishthework你什么时候能完成这项工作；whatyouneededtocompletethework你需要什么来完成工作。根据“Canyoutellme”可知，此处是宾语从句，故应该用陈述语序，故排除B项。根据答语“Noworry!Icanmakeitmyself.”可知，此处表示“是否需要帮助”，故选A。9、C【解析】【详解】句意：——我们应该为残疾儿童做些什么？——你应该成立一个学习小组来帮助他们。考查动词短语。takeup占据；lookup查阅；setup创建；putup张贴。由空格后“astudygroup”可知，应该是成立一个学习小组。故选C。10、B【解析】【详解】句意：人们保持健康的最好的方法之一是养成良好的饮食习惯。考查动词辨析。grow长大；develop逐渐养成；improve提高；find发现。根据“goodeatinghabits.”可知，应是养成良好的饮食习惯。“养成习惯”用developahabit/habits来表示。故选B。二、完成句子（共5小题，满分10分）11、①.It’s②.of③.to④.help【解析】【详解】某人做某事对某人来说是……：It’sadj.ofsb.todosth.，形容词是形容人的品格；帮助：help。故填It’s；of；to；help。12、(m)odern【解析】【详解】句意：比起古建筑，他更喜欢现代建筑。根据“buildingsbetterthanancientones”结合首字母m可推出，古建筑对应的应是现代建筑，此处用形容词modern，表示“现代的”。故填(m)odern。13、①.taken②.up【解析】【详解】句意：收集的娃娃已经占据了我姐姐卧室的一半。根据汉语“占去”提示，应是takeup，结合语境和“has”可知，此句是现在完成时，所以动词是过去分词，所以是takenup。故填taken；up。14、Thebridgeisabouttwentymeterslong【解析】【详解】根据所给的标点可知应用陈述句形式，分析所给的单词，thebridge作主语；is作谓语；abouttwentymeterslong作表语。故填Thebridgeisabouttwentymeterslong“这座桥大约二十米长”。15、1.哈雷湾是世界第二大企鹅的家园/栖息地。2.penguinsarenowingreatdanger.3.成千上万只企鹅宝宝死于恶劣的天气。4.Inordertokeepsafe,manypenguinshavemovedthere.5.除非我们做点什么，（否则）总有一天它们将会无处可去。【解析】【导语】本文介绍了南极洲的企鹅的生存现状，并呼吁人们行动起来保护它们。【1题详解】HalleyBay哈雷湾，wastheworld’ssecondlargesthomeforpenguins是世界第二大企鹅的家园/栖息地。故填：哈雷湾是世界第二大企鹅的家园/栖息地。【2题详解】penguins企鹅，now现在，beingreatdanger处于极大危险中。本句时态是一般现在时，主语是复数，be动词用are。故填penguinsarenowingreatdanger.【3题详解】Thousandsofbabypenguins成千上万只企鹅宝宝，diedfrom死于，theterribleweather恶劣的天气。故填：成千上万只企鹅宝宝死于恶劣的天气。【4题详解】inorderto为了，keepsafe保持安全，manypenguins许多企鹅，havemovedthere已经搬到那里了。故填Inordertokeepsafe,manypenguinshavemovedthere.【5题详解】Unless除非，we我们，dosomething做些事，they它们，won’thaveanywheretogo将会无处可去，oneday总有一天。故填：除非我们做点什么，（否则）总有一天它们将会无处可去。三、补全对话（10分）16、1.WhatcanIdoforyou/CanIhelpyou2.MayItakeyourorder3.Yes,there’resomecarrotsinthesoup/…4.Alarge/medium/smallbowl,please5.Wouldyoulikesomethingtodrink【解析】【导语】本文是一则怀特先生和他的妻子在一家餐馆里，向服务员点餐的对话。【1题详解】根据“WelcometoMaxim’s.”可知，此处是服务员招待顾客的对话。故填WhatcanIdoforyou/CanIhelpyou。【2题详解】根据“OK.MywifewouldlikeafruitsaladandI’llhaveabowlofbeefsouptostartwith.Arethereanyvegetablesinthesoup?”可知，此处是服务员的话，问句句意为：我可以为你们点餐了吗？译为MayItakeyourorder?故填MayItakeyourorder。【3题详解】根据“Arethereanyvegetablesinthesoup?”以及“Andwhatsizedoyouwant?”可知，汤里有蔬菜。故填Yes,there’resomecarrotsinthesoup/…。【4题详解】根据“Andwhatsizedoyouwant?”可知，此处是对大小的回答。故填Alarge/medium/smallbowl,please。【5题详解】根据“Yes,twoglassesoforangejuice.”可知，此处是问你想喝点什么。故填Wouldyoulikesomethingtodrink。四、阅读理解（40分）17、1.A2.C3.C【解析】【导语】本文是一篇说明文，主要介绍了天鹅的相关特征。【1题详解】段落大意题。根据第二段中的“feathers,mouth,nose,neck,skin”等词可知，第二段主要描述的是天鹅的外表特征。故选A。【2题详解】细节理解题。根据最后一段中的“Swansmature(成熟)inthethirdorfourthyearandmaylivefor20yearsinthewildand50yearsormoreincaptivity(圈养)”可知，天鹅在野外可以存活20年，故选C。【3题详解】推理判断题。通读全文可知，本文主要介绍了天鹅的相关特征，天鹅属于动物，所以本文来源于动物杂志，C项符合题意。故选C。18、1.B2.C3.A4.D5.B【解析】【导语】本文主要讲述了地球上的淡水来源以及呼吁大家节约用水。【1题详解】细节理解题。根据“That’sbecauseaboutthree-fourthsoftheearthiscoveredbywater.”可知地球的四分之三被水覆盖，也就是75%，故选B。【2题详解】词义猜测题。根据“Around70%oftheearth’sfreshwaterisiceinthepolar(极地的)places.Theyarefarfromus.”可知地球上大约70%的淡水是极地地区的冰，离我们很远，所以很难运输，tough和difficult同义，故选C。【3题详解】细节理解题。根据“Groundwateralsocan’tgetawayfrompollution.Chemicals(化学制品)thatareusedinfarmingandfactoriescangetintotheground.”可知化学制品可以污染地下水，故选A。【4题详解】细节理解题。根据“Around70%oftheearth’sfreshwaterisiceinthepolar(极地的)places.Theyarefarfromus.”可知地球上大约70%的淡水是极地地区的冰。故选D。【5题详解】主旨大意题。根据“Theearthhaslittleusablewater.Luckily,eachofuscandosomethingtosavewater.Kidsandadultsaresavingwaterwiselyintheirowncommunities(社区).Ifweworktogether,wewillhaveabetterworld.”（地球上几乎没有可用的水。幸运的是，我们每个人都可以做一些事情来节约用水。在他们自己的社区里，孩子和成年人都在明智地节约用水。如果我们共同努力，我们将拥有一个更美好的世界。）可知作者写这篇文章是为了让人们节约用水，故选B。19、1.A2.B3.D4.A5.D【解析】【导语】本文是一篇说明文，本文以二手书为例，介绍了现在二手商品交易越来越受欢迎。【1题详解】推理判断题。根据第一段“Onemillionpeoplearesellingover2millionsecond-handproductsfromclothingandbookstoelectronicproductsonXianyueveryday.”可知，在闲鱼上出售二手商品，有服装、书籍和电子产品。由此推知在二手网站能买到相机，买不到新鲜水果、火车票和药品。故选A。【2题详解】词义猜测题。wasteful浪费的；simple简单的；poor穷的；rich有钱的。根据“theyaresellingtheirusedproductsforcheap.”可知，他们正在以低廉的价格出售二手产品。由此可知，越来越多的人转向简单的生活方式。minimal的意思与simple相同，故选B。【3题详解】细节理解题。根据第二段“Shoppersareattractedtothelowprices,aswellasthefactthatbuyingsecond-handisgoodfortheenvironment.”可知，购物者被低廉的价格以及购买二手商品对环境有益的事实所吸引。故选D。【4题详解】细节理解题。根据第三段“Thedifferenceisthatthebooksaremuchcheaper—asmuchas70%cheaperthannewbooks.”可知这些书要比新书便宜70%，所以30元的书在二手网站的出售价格约为10元。故选A。【5题详解】主旨大意题。通过全文可知，本文以二手书为例，介绍了现在二手商品交易越来越受欢迎。故选D。20、1.①.to②.whether2.Theykeepworkingallthetimewhenweenjoyourfood.3.那就是为什么有些食物对你来说可能比对老年人来说味道更浓。4.Theywillbeboring.5.①.help②.formed③.or④.so⑤.weaker【解析】【导语】本文是一篇说明文，科普了舌头和鼻子是如何帮助我们感知味道的。【1题详解】(A)句意：这些细小的毛发向你的大脑发送关于食物味道的信息。根据“send”，可知此处是短语“send…to…”，意为“发送……到……”，故第一空填to；(B)句意：这样，你就知道它是酸的、甜的、苦的还是咸的。根据空后“sour(酸),sweet,bitter(苦)orsalty.”四种味道，可知此处是表示一种“判断”，“whether”意为“是否”，引导宾语从句，故第二空填whether，故填to；whether。【2题详解】题干句意：当我们享用食物时，他们一直在工作。根据文章第二段“Theykeepworkingallthetimewhenweenjoyourfood.”，意为“当我们享用食物时，他们一直在工作。”，可知与之意思相近，故填Theykeepworkingallthetimewhenweenjoyourfood.【3题详解】That’swhy“那就是为什么”；somefood“一些食物”；maytaste“也许尝起来”；strongerthan“比……更浓”，比较级用法；foryou“对你”；“theydo”代指上文“somefoodsmaytaste”；theold表示“老年人”；故填：那就是为什么有些食物对你来说可能比对老年人来说味道更浓。【4题详解】根据最后一段“Withoutthesenseoftaste,lifewillbeboring.”，可知没有味觉，生活会很无聊，故填Theywillbeboring.【5题详解】根据原文“Haveyoueverwonderedwhyyourfavoritefoodtastessodelicious?Theanswerisaboutyourtongue(舌头)andnose.”，可知舌头和鼻子对感知味道是有帮助的，故第一空填help；根据空后“sinceyouwereborn”，可知指“自从你出生你的味蕾就形成了”，“formed”意为“形成”，过去式，故第二空填formed；根据原文“Theyarereplaced(更新)abouteverytwoweeksorso.”意为“它们大约每两周左右更新一次。”，故第三、四空填or、so；根据原文“That’swhysomefoodsmaytastestrongerforyouthantheydofortheold.”，可知年轻人比老年人味觉更强，所以此处正好相反，指“老年人的味蕾比年轻人更弱”，“stronger”的反义词是“weaker”，故第五空填weaker。故填help；formed；or；so；weaker。五、完形填空（10分）21、1.B2.A3.B4.D5.C6.D7.A8.B9.C10.C11.A12.C13.B14.D15.A【解析】【导语】本文讲述在一个寒冷的冬天的晚上，在我下班回家的途中，一个老人拦下我，递给我十元钱让我去距离不远的摊位那里将最后一个烤甜土豆买下。原来那个女人是他的妻子，他的妻子腿受伤了，这个老人很担心她。最后我没有拿老人的钱，用自己的钱买下了烤甜土豆，这个老人十分感激。【1题详解】句意：我骑着摩托车匆匆下班回家。get“得到”；go“去”；walk“走路”；leave“离开”。gethome“到家”，gohome“回家”。根据“Iwaswaitingforthegreenlight”可知，表示“回家”，故选B。【2题详解】句意：在最后一个十字路口，当我正在等绿灯时，我看到一个老人正朝我走来。while“当……时候”；although“尽管”；because“因为”；unless“除非”。根据“Isawanoldmanwalkingtowardsme”可知，表示“当我正在等绿灯时”，故选A。【3题详解】句意：他拦下我，我感到有一点紧张，因为我不认识他。sad“悲伤的”；nervous“紧张的”；relaxed“放松的”；stupid“愚蠢的”。根据“Hestoppedme...becauseIdidn’tknowhim”可知，被一个不认识的人拦下，应该是紧张的，故选B。【4题详解】句意：这个老人慢慢地说：“打扰一下，你能帮助我吗？”。it“它”；him“他”；her“她”；me“我”。根据“Couldyoujusttakethemoneyandbuyonefromher”可知，这个老人给我钱，让我去买那个老太太的烤甜土豆，所以这个老人应该说“你能帮助我吗？”，故选D。【5题详解】句意：这个老人拿出十元钱并对我说：“你看到那边那个老太太了吗？她正在卖烤甜土豆。你能拿这个钱从她那里买一个吗？”tomatoes“西红柿”；cakes“蛋糕”；potatoes“土豆”；bananas“香蕉”。根据“it’