2026年秋人教版新教材九年级上册英语：Unit 5 Power of Ideas课时练习题（含答案）

第第页2026年秋人教版新教材九年级上册英语：Unit5PowerofIdeas课时练习题SectionAWhatchangescaninventionsbringtoourlives?第一课时（1a-2d）Ⅰ根据句意及首字母或汉语提示填写单词1.L________aremoreconvenientthandesktopcomputersbecausewecancarrythemanywhere.2.Thesec________cantakeclearphotoseveninlowlightconditions.3.Themoviestaralwayswearss________toprotecthereyeswhenshegoesout.4.Look!Three________（扣子）weremissingfromhisshirt.5.We'dbetternotuse________（塑料的）bagsinourdailylives.Ⅱ用括号内所给单词的适当形式填空6.Sir,thereareacoupleof________（file）foryoutoreadfirst.7.Anew________（print）wasboughtbyourclasstoreplacetheoldone.8.Becauseofthesemodern________（invent）,ourlifeisbecomingmuchmoreconvenientthanbefore.9.Thedogcanopenthedoorby________（it）withoutanyhelp.10.Thousandsofcars________（produce）inthisfactorylastyearduetoadvancedtechnology.Ⅲ根据汉语提示完成句子（每空一词）11.几百年前，生活比现在简单得多。________________________ago,lifewasmuchsimplerthanitistoday.12.这辆高速列车每天都被仔细检查，以确保乘客的出行安全。This________________________________carefullyeverydaytomakesureofpassengers'travelsafety.13.这些精美的剪纸可以由民间艺人制作而成。Thesebeautifulpaper-cuttings________________________________folkartists.Ⅳ补全对话根据下面对话中的情境，在每个空白处填入一个适当的语句，使对话恢复完整。(AandBareinamuseum.)A:Lookatthisinterestingthing.It'ssobigandstrange.1.______________________________?B:Oh,it'sagreatinventioncalledtheancientwaterwheel（水车）.A:Theancientwaterwheel?2.______________________________?B:IthinkitwasinventedintheHanDynasty.A:3.______________________________?B:Guess,please!A:Wasitusedforhavingfun?B:No.Itwasusedforcarryingwaterfromtheriver.A:Oh,Isee.Buthow?B:Let'saskourteacher.Heisalearnedmanandhemayknowtheanswer.A:OK.4.______________________________?B:Ithinkit'samazing.A:5.______________________________.TheChinesearesogreat!第二课时（3a-3d）Ⅰ根据句意及首字母或汉语提示填写单词1.Incandescentlightbulbswerei________byThomasEdisonover100yearsago.2.ShestudiesI________becauseshewantstotraveltoRomenextsummer.3.Thosefamousa________fromdifferentcountriesheldapaintingexhibitioninourcitylastmonth.4.Marathonrunnersneedtocoveralong________（距离）of42.195kilometres.5.Thedictionarywillserveasanecessarytoolandbridgefor________（传播）weiqiculture.Ⅱ单项选择()6.Thenewrulewillhaveagreat________onpeople'sdailylives.A.result B.reason

C.effect D.decision()7.Thisnewlibraryprovidesbooksforchildren.Itoffersdifferentkindsofafter-schoolactivities________.A.aswell B.forsure

C.also D.either()8.Theworld'sfirstpracticaltelephone________byAlexanderGrahamBellin1876.A.invented B.wasinvented

C.isinvented D.inventsⅢ用方框中所给单词的适当形式填空（每词限用一次）changesuddencallworksecond9.Thebook________HarryPotterislovedbychildrenallaroundtheworld.10.TheseAIhelperscanprocessalotofinformationin________tofindthebest.11.Weweretalkingaboutthepicnicplanhappilywhenthedooropened________.12.Theweather________quicklyinspring.Bringajacketjustincaseitgetscolder!13.Theinventionofthelightbulbmadeitpossibleforpeople________andreadatnight.Ⅳ根据汉语提示完成句子（每空一词）14.因为大雨，我们学校取消了运动会。________________theheavyrain,ourschoolcancelledthesportsmeeting.15.去年去日本旅行期间，我第一次尝试了寿司。Itriedsushi________________________________duringmytriptoJapanlastyear.16.足球是一项在全世界都很受欢迎的运动。Footballisaverypopularsport________________________.17.丝绸之路对世界产生了巨大的影响，如今依然可见。TheSilkRoad________________________________________theworldthatwecanstillseetoday.18.这位科学家经过多年研究，提出了回收塑料瓶的想法。Thescientist________________________________recyclingplasticbottlesafteryearsofresearch.Ⅴ阅读理解AIhaschangedourlives.TherearefourusefulAIinventionshere.JiugeTheAIcanremember900,000Chinesepoemsclearly.What'smore,itcanwriteapoeminaveryshorttime.InaCCTVshow,Jiugebeatthreegreatpoemfansfromafamouscollege.ForpheusTheping-pongrobotcanplayinaneasywaywithabeginnerandadifficultwaywithabetterplayer.What'smore,itnotonlyencouragesplayerswithwordslike“Goodjob!”butalsogivessomegoodadvicetoimprovetheirskills.Self-drivingAIItcandrivethecarmoresafelythanhumans.Itdoesn'tdrinkwineandneverfeelstired.Itcandowhatwehumansdo.Forexample,ifacarwiththisAIhaspassedanothercar,itwillflashtwowhitelightsfromsidetosidetoshowthankstothecar.FacialRecognition（人脸识别）ItisusedalotinmanyfieldssuchastheAccessControlSystem（门禁系统）.TheACSwon'tletastrangerinwithoutthehouseowner'spermission.Payingbyfacialrecognitioniscommonnow.ThepoliceinHangzhouevencaughtacriminalataconcertwithitshelp.()1.Thetextismainlyabout________.A.robotsinourlife B.AIinventions

C.self-drivingcars D.paymentways()2.WhyisJiugespecial?A.Becauseitcanplaytheviolin.B.Becauseitcandrivecarssafely.C.Becauseit'sgoodatpoems.D.BecauseitwasonCCTV.()3.WhatwillForpheusdowhileplayingping-pong?A.Itwillguesswhatjobtheplayerdoes.B.Itwillbeangryiftheplayerisabeginner.C.Itwillsay“Whatapity!”totheplayer.D.Itwillchangeitswayofplayingaccordingtodifferentplayers.()4.Whendoesthecarwithself-drivingAIflashtwowhitelightsfromsidetoside?A.Whenithastostop.B.Whenitwantstoslowdown.C.Whenitisreadytospeedup.D.Whenithaspassedothercars.()5.Fromthepassage,wecanknow________.A.noonecanbeatForpheusB.facialrecognitionhelpedthepolicecatchacriminalC.Jiugehaswritten900,000poemsD.self-drivingAIcanmakesubwaytrainssafer第三课时（GrammarFocus）Ⅰ用括号内所给单词的适当形式填空1.Asweallknow,________（tour）helpspeoplelearnaboutdifferentculturesandplaces.2.Thelakewascompletely________（freeze）inwinter,sowecouldskateonit.3.Theprojectaboutsavingwaterwasfully________（complete）onschedule.4.Metals________（melt）sothatworkerscanchangethemintowhattheyneed.5.Weweresupposed________（leave）schoolat8:30,butweleft15minutesearlier.Ⅱ根据汉语提示完成句子（每空一词）6.全世界的人们都应该帮助保护自然、节约能源，以创造更美好的未来。People________________________________shouldhelpprotectnatureandsaveenergyforabetterfuture.7.这座小村庄通过一条去年修建的新公路与一座大城市相连。Thissmallvillage________________________abigcitybyanewhighwaythatwasbuiltlastyear.8.那条关于和平的信息是一个小男孩在打扫旧公园时发现的。Themessageaboutpeace________________________ayoungboywhilehewascleaningtheoldpark.9.我最喜欢的书昨天从书桌上消失了，所以它一定是被某个喜欢读书的人偷走了。Myfavouritebookdisappearedfrommydeskyesterday,soit________________________bysomeonewholikesreading.Ⅲ按要求完成下列句子（每空一词）10.Therearemanysportsmatchesonthesportsfield.（改为同义句）Manysportsmatches________________onthesportsfield.11.Heputhiswatchonhisclassmate'sdeskbymistake.（改为被动语态）Hiswatch________________onhisclassmate'sdeskbyhimbymistake.12.Nowadayswecanonlyseeafewpeoplefishingwithcormorants.（改为被动语态）Nowadaysonlyafewpeoplecan________________fishingwithcormorants.Ⅳ语法填空阅读下面短文，在空白处填入一个适当的单词或括号内单词的正确形式。Thetelephoneisoneofthemostimportant1.________（invent）inhumanhistory.Haveyoueverwondered2.________inventedit?AlexanderBellis3.________（wide）credited（认为是……的功劳）withtheinventionofthetelephone,butlittleinformationisavailableabouttheexactdate4.________itwasinvented.Thefirstsuccessfultelephonecall5.________（make）byAlexanderBell.Sincethen,telephones6.________（develop）andimprovedsignificantly.Nowadays,weusesmartphones,whicharemuchmoreadvancedthantheoriginaltelephones.Bell'sinventionchangedthewaysof7.________（communicate）.Peoplenolongerhadtorelyonwritinglettersandwaitfordaysorweekstoreceivearesponse.Thankstothetelephone,wecancommunicateimmediately,connectingwithfriendsandfamilynomatterwheretheyareintheworld.Thetelephonehaschanged8.________（we）livesinmanyways.Ithasmadebusiness9.________（convenience）,allowedustostayintouchwithlovedoneseasily,andprovidedus10.________ameansofaccessinginformationatourfingertips.SectionBHowdoweturnideasintoreality?第四课时（1a-1f）Ⅰ根据句意及首字母或汉语提示填写单词1.Perhapstakingpianolessonsistooe________foryoutoafford.2.Withther________developmentoftechnology,ourliveshavechangedgreatly.3.Afteryearsofdreaming,visitingtheancientcitybecameawonderfulr________forher.4.Scientistshavedonelotsofresearchonthe________（起源）oftheuniversetofindoutwhereitallstarted.5.Somepolice________（官员）cametoourschoolyesterdayandgaveusaspeechonhowtokeepsafe.Ⅱ单项选择()6.—Whichofthethreebooksdoyouwanttoborrow?—________.I'vealreadyreadallofthemanddon'tneedanynow.A.None B.Neither

C.All D.Either()7.Hiscarelessnessintheexperiment________abigmistake,whichmadehisteacherverydisappointed.A.ledtomake B.ledtomaking

C.ledmaking D.ledmake()8.Theserioustrafficjam________theheavyrainlastnight,andit________manypeoplebeinglateforworkthismorning.A.resultedfrom;resultedinB.resultedin;resultedfromC.resultedfrom;ledD.ledto;resultedfromⅢ用方框中所给单词的适当形式填空（方框中有两个词为多余项）shapeofficecreatesolveresponsiblenonecheap9.Herpaintingofmountainvillagesisabeautiful________fulloflove.10.Amongallthenewwatchesinthestore,________isfitformyfather.11.Weshouldlearntobea________personwhenwegrowup,nomatterwhathappens.12.Theclothesinthissupermarketare________thanthoseinthemall,andthequalityisgood.13.Moststudentsbecameinterestedin________scienceproblemsaftertheamazingexperiment.Ⅳ根据汉语提示完成句子（每空一词）14.青少年看屏幕时间过长可能导致视力下降。Toomuchscreentimemay________________pooreyesightforteenagers.15.她现在没做完作业，但之后会认真完成。Shedoesn'tfinishherhomeworknow,butshewilldoitcarefully________________.16.我们得加快脚步，赶上前往乡下的早班车。Weneed________________________ourstepstocatchtheearlybustothecountryside.17.当班长意味着要负责帮助同学和老师。Beingaclassmonitormeans________________________classmatesandteachers.第五课时（2a-3c）Ⅰ完形填空ThestoryofThomasEdisonandtheincandescentlightbulbisoneofthemostfamousstoriesinthehistoryofinvention.However,thejourneyfromabrightideatoapractical1.________isfarfromeasy.ManypeoplesupposethatEdisonsimplyonedayhadagreatideaandmadeitwork.Butthe2.________wasthatheandhisteamtestedover1,600materialsforthefilament（灯丝）beforefindingonethatworkedwell.Edisonwas3.________forleadinghisteamatMenloPark.Hebelievedthatsuccesscomesfrom1%inspirationand99%perspiration（汗水）.Thisstrongbelief4.________thousandsofexperiments,mostofwhichendedinfailure.Insteadofseeingtheseasawasteoftime,he5.________themasstepsclosertosuccess.Heoncesaid,“Ihavenotfailed.I'vejustfound10,000waysthatwon'twork.”The6.________ofalong-lasting,practicallightbulbdidn'tjusthappenovernight.Itrequired7.________thinkingandarefusaltogiveup.Whenothersthoughtitwas8.________,Edisonsawachallengetobeovercome.He9.________improveduponhisdesigns,makingeachversionalittlebetterthanthelast.Finally,aftercountlesstests,theyfoundthatacarbonizedbamboofilamentcould10.________forover1,200hours.Thisbreakthrough11.________thewayforwidespreadelectriclighting.Itchangedthe12.________peoplelivedandworked,makingnightsasproductiveasdays.Edison'sstoryteachesusthattrue13.________oftencomesfromcontinuouseffortandthecouragetofacedifficulties.Everytimeweturnonalight,weshouldremembertheincrediblejourneybehindthiseveryday14.________.Itremindsusthateventhemostbrilliantideasneedhardworktobecomea15.________.()1.A.discoveryC.decisionB.creationD.suggestion()2.A.dreamC.factB.planD.opinion()3.A.usefulC.responsibleB.thankfulD.ready()4.A.ledtoC.gaveupB.lookedforD.putoff()5.A.refusedC.avoidedB.acceptedD.forgot()6.A.priceC.inventionB.sizeD.sale()7.A.creativeC.simpleB.traditionalD.strange()8.A.impossibleC.wonderfulB.necessaryD.easy()9.A.suddenlyC.quicklyB.carefullyD.finally()10.A.waitC.stopB.lastD.stay()11.A.askedC.blockedB.pavedD.cleaned()12.A.reasonC.timeB.placeD.way()13.A.luckC.beautyB.successD.health()14.A.gameC.toyB.objectD.gift()15.A.memoryC.hobbyB.realityD.choiceⅡ阅读理解Aboylituphisfamily'stentwithelectricitythathemadehimselfbyusingtwofanshefoundatamarket.Becauseofhistalent,hisneighboursinthetentcampcalledhim“LittleNewton”.“Newtonwassittingunderanappletreewhenanapplefellonhishead.Andweherearelivingindarknessandtragedy（悲剧）,andshells（炮弹）arefallingonus,soIthoughtofcreatinglight,anddidso,”Al-Attarsaidtothereporter.TheAl-Attarfamilyconnectedtheirtenttothesideofahouse,allowingtheboytoclimbontotheroofandsetuphistwofanstochargebatteries（给电池充电）.Then,helinked（连接）thefanstowires（电线）runningdownthroughthehouseandusedswitches（开关）,lightbulbsandathinpieceofwoodinthetenttomakelightingforhisfamily.Ittookhimawhiletosucceedfinallyafterhisfirsttwotriesfailed.“IwasveryhappythatIwasabletomakethisbecauseIeased（减轻）thesufferingoftheconditionsthatwelivein.Iamveryhappythattheycallme‘LittleNewton’,becauseIhopetoachievemydreamofbecomingascientistlikeNewtonandcreatinganinventionthatwillbenefitnotonlythepeopleherebutthewholeworld,”Al-Attartoldthereporter.()16.WhywasAl-Attarcalled“LittleNewton”byhisneighbours?A.Becauseanapplefellonhishead.B.Becauseheinventedalightbulb.C.Becauseheusedfanstomakeelectricity.D.Becausehediscoveredanewsourceofenergy.()17.Howdidtheboysetuphisfans?()18.WhichofthefollowingisAl-Attar'shope?A.Sellinghisinventiontobecomerich.B.Callingahalttowarsallovertheworld.C.Helpinghiscountrywinthewar.D.Makingsomethinggoodforthewholeworld.()19.WhatarethebestwordstodescribeAl-Attar?A.Calmandrelaxed.B.Cleverandhopeful.C.Outgoingandfocused.D.Politeandshy.Ⅲ阅读表达In1876,AlexanderGrahamBellmadeagreatinvention—thetelephone.Forthefirsttimeinhistory,peoplecouldtalktosomeonefarawayjustliketheywereinthesameroom.Buttoday,phonescandomuchmorethanjustmakecalls!Thestoryofmobilephonesbeganwithtwo-wayradios.Theseearlydevices（设备）hadabigproblem—theyonlyworkedwhenpeoplewereclosetoeachother.Inthe1940s,smartscientistsfoundaway.Theybuilttallradiotowersacrossthecountrytopasssignals（信号）easily.Everythingchangedin1973whenDr.MartinCoopermadethefirstrealmobilephonecall.Duringthe1980s,mobilephonesbecamesmallerbutwerestillveryexpensive.Onlyrichbusinesspeoplecouldaffordthem,andthephoneslookedlikebigplasticbricks.The1990sbroughtanotherbigchange.Phonesbecamecheaperandsmaller,fittingeasilyinpockets.Soon,almosteveryonehadone.Textmessagingbecamepopular.Peoplestartedwritingshortmessagesinsteadofmakingphonecalls.Meetingtimebecamemoreflexible（灵活的）becauseyoucouldjusttext“I'llbe15minuteslate.”Nowwehavesmartphones—likepowerfulmini-computersinourpockets.Weusethemtotakephotos,watchvideos,playgames,andevenhelpwithhousework!Messagingappsletussendvideosandlongmessageseasily.Whilephoneshelpusstayconnected,somepeopleworrywespendtoomuchtimeonthem.Lookingback,it'samazinghowphoneshavechanged.FromBell'ssimpletelephonetotoday'ssmartphones,thishastrulychangedourlives.Whatwillphonesbeabletodonext?Onlytimewilltell!20.WhendidAlexanderGrahamBellinventthetelephone?________________________________21.Whydidscientistsbuildtallradiotowersinthe1940s?________________________________22.Whomadethefirstrealmobilephonecall?________________________________23.Howcansmartphoneshelpusinourlife?（请给出两个例子）________________________________24.Whatdoyouthinkthefuturephonesmightbelike?（请自拟一句话作答）________________________________Ⅳ用括号内所给单词的适当形式填空1.Manytech________（company）aretryingtodevelopAIproductstomakepeople'sliveseasier.2.Since1964,YuanLongpinghasworkedtoincreasethe________（produce）ofrice.3.Nowadays,electroniclocksare________（wide）used,whichmeanspeopledon'tneedtousekeystoentertheirhouses.4.Thankstotheheroesinhistory,societyhasdevelopedso________（rapid）.5.Mostteenagerscan't________（buy）expensiveelectronicproductswiththeirpocketmoney.Ⅴ根据汉语提示翻译句子6.他没有通过考试。因此他决定更加努力学习。（asaresult）____________________________________________________________________7.令我惊讶的是，一个名叫李华的人因其善良而在社区里广为人知。（toone'ssurprise）____________________________________________________________________8.她可以在学校聚会上弹钢琴或唱歌。（either...or...）____________________________________________________________________9.该工厂每月可生产数百辆玩具车。（canbedone）____________________________________________________________________10.似乎这些脏衣服昨天就被洗了。（Itseemedthat...）____________________________________________________________________Ⅵ短文填空根据短文内容，用方框中所给词的正确形式填空，使短文完整、正确。goodhelprapidincludesuitablerealfeelpaintbutsheEmmaisacreativegirlwholovessolvingproblems.Oneday,herlittlebrothercomplainedthathistoysalwaysfelloffthetable.Emmadecided1.________him.Shethoughtforawhileandcameupwithanidea:Shewouldbuildasmallshelf.Emmagatheredsomematerials,2.________wood,nails,andahammer.Shechosecheapbut3.________materialstokeepcostslow.Sheworkedcarefullyandslowlytomakesureeverythingwasperfect.Herbrotherwatchedherandasked,“Howdidyoulearntobuildthis?”Emmasmiledandsaid,“IlearntitfromDad.”Afterafewhours,theshelfwasready.It4.________brightcoloursbyEmma.Herbrotherwassohappythathehuggedherandsaid,“You'rethe5.________sisterintheworld!”Emmafeltproudandrealizedshelovedcreatingthings.ThenEmmajoinedtheschool'sinventionclubandstartedworkingonmoreprojects.Shealwaysacted6.________forherideas.Herteachersaid,“Emma,youmightbecomeagreatinventoroneday!”Emma7.________excitedandcouldn'twaittoshareherideas.Thatnight,Emmalayinbedandthoughtabout8.________future.Shedreamtofcreatinginventionsthatcouldhelppeopleandmaketheworldbetter.Sheknewitwouldtakehardwork,9.________shewasreadytokeeptrying.Shehopedherdreamswouldbecomea10.________oneday.Afterall,inventingisallaboutcreativityandsolvingproblems.Unit5单元限时检测Ⅰ单项选择（8分）()1.—Whatdoyouthinkisthegreatest________?—Theinternet.It'squiteimportantinourdailylife.A.information B.invention

C.invitation D.introduction()2.Manyyoungpeoplecan'taffordhouses,becausethehousesaretoo________.A.strong B.large

C.different D.expensive()3.Smarthomeappliances（智能家电）are________usedinpeople'shomesthesedays.A.luckily B.widely

C.totally D.exactly()4.I________hewillsellhishouse,becausehehasgotajobabroad.A.make B.suppose

C.decide D.suggest()5.—Whichisyourfavouritesubject,Chinese,mathsorEnglish?—________.Ilikephysicsbest.A.Nothing B.Neither

C.None D.Noone()6.Myfamilycan'tafford________anewhouse.Therefore,wehavetobuyasecond-handone.A.buying B.tobuy

C.buy D.bought()7.Students________tofollowtheteacher'sinstructionswhiletheyareinthelaboratory.A.require B.arerequired

C.required D.wererequired()8.—Youknowwhat?JiangxiFlightUniversity________inNanchangin2023.—I'msoproudofit.A.setup B.setsup

C.issetup D.wassetupⅡ完形填空（10分）Manyinventionsweretheresultsofaccidents.Todaywe'regoingtolearnabouta9.________invention—theraincoat.Doyouknow10.________itwasinvented?Ithasbeenmorethantwothousandyearssincewebegantouseanumbrella.However,peopleoftenfeltitnotconvenienttoholdanumbrella11.________doingsomethingwithhands.Thentheraincoatwasinvented.ItissaidthattheraincoatwasinventedbyMacintoshin1823.Macintoshwasa(n)12.________inaneraserfactoryinScotland.Oneday,hepouredtherubberliquid（橡胶液体）overhiscoatcarelesslywhenmakingerasers.Hewastoo13.________tocleanitandwentbackhomewiththedirtycoat.Onthewayhome,itrainedheavily.Macintoshdidn'thaveanumbrella,sohehadtorunhome14.________.Whenhegothome,he15.________thewetclothes.Tohissurprise,theareaofthecoatwithrubberoveritwasn'twet.“Whynotmakearubberraincoat?”Macintoshtold16.________.Thenextday,hebrushedtherubberliquidalloverhiscoat.Heworethe“rubbercoat”onrainydaysandtookawalkoutsidetotestifitcouldreallykeep17.________therain.Surprisingly,theclothesinsidethe“rubbercoat”werenotwetatall.Sotheraincoatwasinventedinthisway.Therubberraincoatssoon18.________inthemarket.Yearafteryear,peopletriedtoimprovetheraincoats.Todayraincoatsarewidelyusedinourdailylife.()9.A.beautifulC.usefulB.colourfulD.careful()10.A.whatC.whyB.howD.where()11.A.afterC.whileB.untilD.before()12.A.scientistC.astronautB.workerD.pilot()13.A.cleverC.tallB.relaxedD.busy()14.A.suddenlyC.quicklyB.quietlyD.slowly()15.A.putoffC.tookoffB.putonD.pickedup()16.A.myselfC.herselfB.himselfD.yourself()17.A.onC.offB.withD.in()18.A.foundC.appearedB.producedD.madeⅢ阅读理解（16分）ANineyearsago,HemanBekelereceivedagift—achemistryset.Heusedittomake“potions（药水）”.Atthattime,onlyhisparentsknewhiswork.Now,attheageof16,therearealotmorepeoplewatchinghiswork.InOctober2023,3MandDiscoveryEducationnamedHemanasthewinneroftheirYoungScientistChallengewithaprizeof$25,000becauseheinventedasoapthatcouldonedaybeusedtotreatsomekindsofskincancer（皮肤癌）.HemanwasborninAddisAbaba,thecapitalcityofEthiopia,inAfrica.HemovedtotheUSwithhisfamilyat4.HeremembersseeingpeopleinAfricaworkinginthehotsunwithoutanyprotectionfortheirskin,andthatcanbethemaincauseofskincancer.Skincancertreatmentsusuallycostabout$40,000.Hemanwonderediftherewasacheaperway.Hethoughtofaddingaskincancermedicinetosoap.“Whatissomethingthateveryoneisabletobuy?”Hemanthoughttohimself.“Everyoneusessoapandwaterforcleaning.Therefore,soapwouldprobablybethebestchoice.”Itcouldtakeyearsbeforethesoapisreadytobesold.ButHeman,the10thgraderatWoodsonHighSchool,isdetermined.Overthesummer,hespenteveryweekdayinalab.Whenhegoesbacktoschoolthisfall,he'llbeinthelablessoften.Buthe'llkeepworkinghardtomakehisdreamcometrue.Hemanencouragesallkidstodreambig.“Justkeepinventingthings,”hesays.“Keepthinkingofnewwaystoimproveourworld.”()19.WhendidHemangetthechemistryset?A.In2026.B.About6yearsago.C.Whenhewasinthe10thgrade.D.Attheageof7.()20.Accordingtothetext,what'sthemainreasonforskincancerinAfrica?A.ThesunlightinAfricaistoostrong.B.Africansaremorelikelytogetill.C.Africansdon'tprotecttheirskininthehotsun.D.Africansusesoapforcleaning.()21.WhydidHemanchoosesoaptotreatskincancer?A.Becauseit'scheapandeasytouse.B.Becausehisparentslikeusingsoap.C.BecausetherearemanysoapcompaniesinAfrica.D.Becausehecanonlyfindsoapinthelab.()22.What'sthemainpurposeofthetext?A.ToexplainwhymanyAfricansgetskincancer.B.ToshowhowHeman'sparentssupporthiminmakingthesoap.C.ToexplainwhyHeman'ssoapisbetterthanotherproducts.D.TointroduceHemanandhisinvention.BStudentspasstheirschoolworkthroughdifferenthands,fromtheirgroupleaderstotheclassrepresentative（课代表）,andfinallytotheteacher.Itmightnotsoundtoodifficult,butsometimesitcangowrongandtakesalotoftime.Todealwiththisproblem,ZhangXiruifromShenzhenGezhiAcademyinGuangdongcameupwithausefultool—asmarthomeworkcollectionrobot.Thiswonhimfirstprizeinthe20thGuangdongProvincialChildren'sInventionAwards.Therobotusesradiofrequencyidentification（RFID射频识别）technology—areaderandaspecialtag（标签）thatcanshareinformationwithouttouchingeachother.Thisway,itcanhelpfindandknowwhatitislookingfor.Eachstudent'snotebookhasaspecialRFIDtagwithhisorhernameandthesubject.Studentsonlyneedtoplacetheirnotebooksontherobot,andthemachine“sees”thenotebook,readsitstagandtakesthenameoutofthenamelist.“Teacherscancheckwhohasn'thandedinhomeworkbyconnectingtheirphoneswiththerobotthroughWi-Fi,”the13-year-oldboyexplainedtoShenzhenSatelliteTV.Now,he'splanningtodevelopathird-generationandhopestouseultra-high-frequency（超高频）radiotechnologytoreadlotsofRFIDtagsfromfaraway.Thatmeansifyoustickaspecialtagonyournotebook,therobotcanreadtheinformationfromathickstack（堆）ofnotebooksatonce.Zhangbelievesthisisthekeytoartificialintelligencewhichcanmakelifeeasierforus.Zhangdreamsofbecomingascientistwhenhegrowsup.“Ihavetriedmakingmodelairplanesandotherscientificandcreativeprojects.Inventinghasbroughtmejoyandhappiness,”hesays.()23.Whatisthedisadvantageofthetraditionalwaytopassstudents'schoolwork?A.Itmightbetoodifficult.B.Itmaycosttoomuchmoney.C.Itcangowrongandtakesalotoftime.D.Onlytheteacherpassestheschoolwork.()24.Whatistherightorderofthefollowingfactsaccordingtothepassage?a.Themachine“sees”thenotebookandreadsitstag.b.Studentsplacetheirnotebooksontherobot.c.Themachinetakesthestudent'snameoutofthenamelist.d.Eachstudent'snotebookhasaspecialRFIDtagwithhisorhernameandthesubject.A.bcda B.bdac

C.dbac D.dbca()25.Whichsentencecanbeputintheblank“▲”inParagraph4?A.Therobotisdifficulttodevelop.B.Therobotcanmakelifeeasierforus.C.Therobotisthethird-generationmodelmadebyZhang.D.Therobotisthesecond-generationmodelmadebyZhang.()26.What'sthemainideaofthepassage?A.HowaspecialRFIDtag