2026年秋人教版九年级英语上册 Unit5 Power of Ideas课时练习题（含答案）

202建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(la・2d)

I根据句意及首字母或汉语提示填写单词

1.Laremoreconvenientthandesktopcomputersbecausewecancarrythemanywhere.

2.Theseccantakeclearphotoseveninlowlightconditions.

3.Themoviestaralwayswearsstoprotecthereyeswhenshegoesout.

4.Look!Three(扣子)weremissingfromhisshirt.

5.We'dbetternotuse(塑料的)bagsinourdailylives.

n用括号内所给单词的适当形式填空

6.Sir,thereareacoupleof(file)fbryoutoreadfirst.

7.Anew.(print)wasboughtbyourclasstoreplacetheoldone.

8.Becauseofthesemodern(invent),ourlifeisbecomingmuchmoreconvenientthanbefore.

9.Thedogcanopenthedoorby.(it)withoutanyhelp.

lO.Thousandsofcars(produce)inthisfactorylastyearduetoadvancedtechnology.

川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。

Thiscarefullyeverydaytomakesureofpassengersrtravel

safety.

13.这些精美的剪纸可以由民间艺人制作而成。

Thesebeautifulpaper-cuttingsfolkartists.

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。

第1页共24页

(AandBareinamuseum.)

A:Lookatthisinterestingthing.lfssobigandstrange.1.?

B:Oh,it*sagreatinventioncalledtheancientwaterwheel(水车).

A:Theancientwaterwheel?2.?

B:1thinkitwasinventedintheHanDynasty.

A:3.?

B:Guess,please!

A:Wasitusedforhavingfun?

B:No.Itwasusedfbrcarryingwaterfromtheriver.

A:Oh.Isee.Buthow?

B:Lefsaskourteacher.Heisalearnedmanandhemayknowtheanswer.

A:OK.4.?

B:Ithinkit'samazing.

A:5..TheChinesearesogreat!

第2页共24页

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.IncandescentlightbulbswereibyThomasEdisonover100yearsago.

2.ShestudiesIbecauseshewantstotraveltoRomenextsummer.

3.Thosefamousafromdifferentcountriesheldapaintingexhibitioninourcitylastmonth.

4.Marathonrunnersneedtocoveralong(距离)of42.195kilometres.

5.Thedictionarywillserveasanecessarytoolandbridgefbr(传播)weiqiculture.

II单项选择

()6.Thenewrulewillhaveagreat.onpeople'sdailylives.

A.resultB.reason

C.effectD.decision

()7.Thisnewlibraryprovidesbooksfbrchildren.ltoffersdifferentkindsofafter-schoolactivities

A.aswellB.fbrsure

C.alsoD.either

()8.Theworld'sfirstpracticaltel叩honebyAlexanderGrahamBellin1876.

A.inventedB.wasinvented

C.isinventedD.invents

m用方框中所给单词的适当形式填空(每词限用一次)

changesuddencallworksecond

9.ThebookHarryPotterislovedbychildrenallaroundtheworld.

10.TheseAIhelperscanprocessalotofinformationintofindthebest.

1l.Weweretalkingaboutthepicnicplanhappilywhenthedooropened.

12.Theweatherquicklyinspring.Bringajacketjustincaseitgetscolder!

13.Theinventionofthelightbulbmadeitpossiblefbrpeopleandreadatnight.

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。

第3页共24页

theheavyrain,ourschoolcancelledthesportsmeeting.

15.去年去日本旅行期间，我第一次尝试了寿司。

ItriedsushiduringmytriptoJapanlastyear.

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。

TheSilkRoadtheworldthatwecanstillseetoday.

18.这位科学家经过多年研究，提出了回收塑料瓶的想法。

Thescientistrecyclingplasticbottlesafteryearsofresearch.

V阅读理解

AIhaschangedourlives.TherearefourusefulAIinventionshere.

Jiuge

TheAIcanreineniber900,000Chinesepoemsulectrly.What'sinure,iIcanwriteapueminaveryshoil

time.InaCCTVshow,Jiugebeattlireegreatpoemfansfromafamouscollege.

Forpheus

Theping-pongrobotcanplayinaneasywaywithabeginnerandadifficultwaywithabetterplayer.

Whafsmore,itnotonlyencouragesplayerswithwordslike“Goodjob!”butalsogivessomegoodadvice

toimprovetheirskills.

Self-drivingAI

Itcandrivethecarmoresafelythanhumans.ltdoesn'tdrinkwineandneverfeelstired.ltcandowhatwe

humansdo.Forexample,ifacarwiththisAIhaspassedanothercar,itwillflashtwowhitelightsfrom

sidetosidetoshowthankstothecar.

FacialRecognition(人脸识别)

ItisusedalotinmanyfieldssuchastheAccessControlSystem(门禁系统).TheACSwon'tleta

strangerinwithoutthehouseowner'spermission.Payingbyfacialrecognitioniscommonnow.Thc

policeinHangzhouevencaughtacriminalataconcertwithitshelp.

()1.Thetextismainlyabout,

A.robotsinourlifeB.AIinventions

C.selMrivingcarsD.paymentways

()2.WhyisJiugespecial?

A.Becauseitcanplaytheviolin.

B.Becauseitcandrivecarssafely.

第4页共24页

C.Becauseit'sgoodatpoems.

0.BecauseitwasonCCTV.

()3.WhatwillForpheusdowhileplayingping-pong?

A.Itwillguesswhatjobtheplayerdoes.

B.Itwillbeangryiftheplayerisabeginner.

C.Itv/illsay"Whatapity!"totheplayer.

D.Itwillchangeitswayofplayingaccordingtodifferentplayers.

()4.Whendoesthecarwithselt-drivingAIflashtwowhilelightsfromsidetoside?

A.Whenithastostop.

B.Whenitwantstoslowdown.

C.Whenitisreadytospeedup.

D.Whenithaspassedothercars.

()5.Fromthepassage,wecanknow.

A.noonecanbeatForpheus

B.facialrecognitionhelpedthepolicecatchacriminal

C.Jiugehaswritten900,000poems

D.sei仔drivingAIcanmakesubwaytrainssafer

第5页共24页

第三课时(GrammarFocus)

1用括号内所给单词的适当形式填空

LAsweallknow,(tour)helpspeoplelearnaboutdifferentculturesandplaces.

2.Thelakewascompletely.(freeze)inwinter,sowecouldskateonit.

3.Theprojectaboutsavingwaterwasfldly.(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。

Peopleshouldhelpprotectnatureandsaveenergyfbrabetter

future.

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。

Thissmallvillageabigcitybyanewhighwaythatwasbuiltlastyear.

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。

Themessageaboutpeaceayoungboywhilehewascleaningtheoldpark.

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,soitbysomeone

wholikesreading.

Ill按要求完成下列句子(每空一词)

10.Therearcmanysportsmatchesonthesportsfield.(改为同义句)

Manysportsmatchesonthesportsfield.

11.Heputhiswatchonhisclassmate'sdeskbymistake.(改为被动语态)

Hiswatchonhisclassmate'sdeskbyhimbymistake.

12.Nowadayswecanonlyseeafewpeoplefishingwithcormorants.(改为被动语态)

Nowadaysonlyafewpeoplecanfishingwithcormorants.

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.(invcnt)inhumanhistory.Haveyouever

wondered2.inventedit?AlexanderBellis3.(wide)credited(认为是...的功

劳)withtheinventionofthetelephone,butlittleinformationisavailableabouttheexactdate4.

itwasinvented.

第6页共24页

Thefirstsuccessfilltelephonecall5.(make)byAlexanderBelLSincethen,telephones6.

(develop)andimprovedsignificantly.Nowadays,weusesmartphones,whicharemuchmore

advancedthantheoriginaltelephones.

Bell'sinventionchangedthewaysof7.(communicate).Peoplenolongerhadtorelyon

writinglettersandwaitfbrdaysorweekstoreceivearesponse.Thankstothetelephone,wecan

communicateimmediately,connectingwithfriendsandfamilynomatterwheretheyareintheworld.

Thetelephonehaschanged8.(we)livesinmanyways.lthasmadebusiness9.

(convenience),allowedustostayintouchwithlovedoneseasily,andprovidedus10.a

meansofaccessinginformationatourfingertips.

第7页共24页

SectionBHowdoweturnideasintoreality?

第四课时

I根据句意及首字母或汉语提示填写单词

1.Perhapstakingpianolessonsistooeforyoutoafford.

2.Withthcrdevelopmentoftechnology,ourliveshavechangedgreatly.

3.Afteryearsofdreaming,visitingtheancientcitybecameawonderfulrfbrher.

4.Scientistshavedonelotsofresearchonthe(起源)oftheuniversetofindoutwhereitall

started.

5.Somepolice(官MJcametoourschoolyesterdayandgaveusaspeechonhowtokeep

safe.

II单项选择

()6.一Whichofthethreebooksdoyouwanttoborrow?

一..I'vealreadyreadallofthemanddon'tneedanynow.

A.NoneB.Neither

C.A11D.Either

()7.Hiscarelessnessintheexperimentabigmistake,whichmadehisteachervery

disappointed.

A.ledtomakeB.ledtomaking

C.ledmakingD.ledmake

()8.Theserioustrafficjam.theheavyrainlastnight,anditmanypeoplebeinglate

fbrworkthismorning.

A.resultedfrom;resultedin

B.resultedin;resultedfrom

C.resultedfrom;led

D.ledto;resultedfrom

m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)

shapeofficecreatesolveresponsible

nonecheap

第8页共24页

9.Herpaintingofmountainvillagesisabeautiful.fulloflove.

10.Amongallthenewwatchesinthestore,isfitformyfather.

11.Weshouldlearntobeapersonwhenwegrowup,nomatterwhathappens.

12.Th?clothesinthissupermarketarethanthoseinthemall,andthequalityisgood.

13.Moststudentsbecameinterestedinscienceproblemsaftertheamazingexperiment.

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。

Toomuchscreentimemaypooreyesightforteenagers.

15.她现在没做完作业，但之后会认真完成。

Shedoesn*tfinishherhomeworknow.butshewilldoitcarefiillv

16.我们得加快脚步，赶上前往乡下的早班车.

Weneedourstepstocatchtheearlybustothecountryside.

17.当班长意味着要负责帮助同学和老师。

Beingaclassmonitormeansclassmatesandteachers.

第9页共24页

第五课时(2a-3c)

I完形填空

ThestoryofThomasEdisonandtheincandescentlightbulbisoneofthemostfamousstoriesinthe

historyofinvention.However,thejourneyfromabrightideatoapracticalI.isfarfromeasy.

ManypeoplesupposethatEdisonsimplyonedayhadagreatideaandmadeitwork.Butthe2.

wasthatheandhisteamtestedover1,600materialsfbrthefilament(灯丝)beforefindingonethat

workedwell.

Edisonwas3.forleadinghisteamatMenloPark.Hebelievedthatsuccesscomesfrom1%

inspirationand99%perspiration(汗水).Thisstrongbelief4.thousandsofexperiments,

mostofwhichendedinfailure.Insteadofseeingtheseasawasteoftime,he5.themassteps

closertosuccess.HeoncesaidJIhavenotfailed.Tvejustfound10,000waysthatwon'twork.°

The6.ofalong-lasting,practicallightbulbdidn'tjusthappenovemight.ltrequired7.

thinkingandarefusaltogiveup.Whenothersthoughtitwas8.,Edisonsawa

challengetobeovercome.He9.improveduponhisdesigns,makingeachversionalittlebetter

thanthelast.

Finally,aftercountlesstests,theyfoundthatacarbonizedbamboofilamentcould10.fbrover

1,200hours.Thisbreakthrough11.thewayfbrwidespreadelectriclighting.ltchangedthe12.

peoplelivedandworked,makingnightsasproductiveasdays.

Edison'sstoryteachesusthattrue13.oftencomesfromcontinuouseffortandthecourageto

focedifficulties.Everytimeweturnonalight,weshouldremembertheincrediblejourneybehindthis

everyday14..Itremindsusthateventhemostbrilliantideasneedhardworktobecomea15.

()1.A.discoveryB.creation

C.dccision□.suggestion

()2.A.dreamB.plan

C.fact□.opinion

()3.A.usefulB.thankful

C.rcsponsiblcD.ready

()4.A.ledtoB.lookedfbr

C.gaveupD.putoff

()5.A.refusedB.accepted

C.avoidedD.forgot

第10页共24页

()6.A.priceB.size

C.inventionD.sale

()7.A.creativeB.traditional

C.simpleD.strange

()8.A.impossibleB.necessary

C.wonderfiilD.easy

()9.A.suddcnlyB.carcftilly

C.quickly0.finally

()10.A.waitB.last

C.stopD.stay

Oil.A.askedB.paved

C.blockedD.cleaned

()12.A.reasonB.place

C.timeD.way

()13.A.luckB.success

C.beauty□.health

()14.A.gameB.object

C.toyD.gift

()15.A.memoryB.reality

C.hobby□.choice

II阅读理解

Aboylituphisfamily'stentwithelectricitythathemadehimselfbyusingtwofanshefoundatamarket.

Becauseofhistalent,hisneighboursinthetentcampcalledhim“LittleNewton”.

“Newtonwassittingunderanappletreewhenanapplefellonhishead.Andweherearelivingin

darknessandtragedy(悲剧),andshells(炮弹)arefallingonus,soIthoughtofcreatinglight,and

didso,"Al-Attarsaidtothereporter.

TheAl-Attarfamilyconnectedtheirtenttothesideofahouse,allowingtheboytoclimbontotheroof

andsetuphistwofanstochargebatteries(给电池充电).Then,helinked(连接)thefanstowires

(电线)runningdownthroughthehouseandusedswitches(开关)，lightbulbsandathinpieceof

woodinthetenttomakelightingfbrhisfamily.

Ittookhimawhiletosucceedfinallyafterhisfirsttwotriesfailed.

第11页共24页

"IwasveryhappythatIwasabletomakethisbecauseIeased(减轻)thesufferingoftheconditions

thatwclivein.Iamveryhappythattheycallme'LittleNewton*,becauseIhopetoachievemydreamof

becomingascientistlikeNewtonandcreatinganinventionthatwillbenefitnotonlythepeopleherebut

thewholeworld,nAl-Attartoldthereporter.

()16.WhywasAl-Attarcalled"LittleNewton'*byhisneighbours?

A.Becauseanapplefellonhishead.

B.Becauseheinventedalightbulb.

C.Becauseheusedfanstomakeelectricity.

□.Becausehediscoveredanewsourceofenergy.

()17.Howdidtheboysetuphisfans?

VB.C.

()18.WhichofthefollowingisAl-Attar*shope?

A.Sellinghisinventiontobecomerich.

B.Callingahalttowarsallovertheworld.

C.Helpinghiscountrywinthewar.

D.Makingsomethinggoodforthewholeworld.

()19.WhatarethebestwordstodescribeAl-Attar?

A.Calmandrelaxed.

B.Cleverandhopeful.

C.Outgoingandfocused.

D.Politeandshy.

Ill阅读表达

In1876,AlexanderGrahamBellmadeagreatinvention-thetelephone.Forthefirsttimeinhistory,

peoplecouldtalktosomeonefarawayjustliketheywereinthesameroom.Buttoday,phonescando

muchmorethanjustmakecalls!

1hestoryofmobilephonesbeganwithtwo-wayradios.Theseearlydevices(设备)hadabig

problem-theyonlyworkedwhenpeoplewereclosetoeachother.Inthe1940s,smartscientistsfounda

way.Theybuilttallradiotowersacrossthecountrytopasssignals(彳言号)easily.

Everythingchangedin1973whenDr.MartinCoopermadethefirstrealmobilephonecall.Duringthe

1980s,mobilephonesbecamesmallerbutwerestillveryexpensive.Onlyrichbusinesspeoplecould

affordthem,andthephoneslookedlikebigplasticbricks.

第12页共24页

The1990sbroughtanotherbigchange.Phonesbecamecheaperandsmaller,fittingeasilyinpockets.

Soon,almosteveryonehadone.Textmessagingbecamepopular.Peoplestartedwritingshortmessages

insteadofmakingphonecalls.Meetingtimebecamemoreflexible(灵，舌的)becauseyoucouldjust

texCTllbe15minuteslate.”

Nowwehavesmartphones-likepowerfulmini-computersinourpockets.Weusethemtotakephotos,

watchvideos,playgames,andevenhelpwithhousework!Messagingappsletussendvideosandlong

messageseasily.Whilephoneshelpusstayconnected,somepeopleworrywespendtoomuchtimeon

them.

Lookingback,ifsamazinghowphoneshavechanged.FromBell'ssimpletelephonetotoday's

smartphones,thishastmlychangedourlives.Whatwillphonesbeabletodonext?Onlytimewilltell!

2O.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

l.Manytech(company)aretryingtodevelopAIproductstomakepeople'sliveseasier.

2.Since1964,YuanLongpinghasworkedtoincreasethe(producc)ofrice.

3.Nowadays,electroniclocksarc.(widc)uscd,whichmeanspeopledon'tneedtousekeysto

entertheirhouses.

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)

第13页共24页

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。(ioone*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。

goodhelprapidincludesuitablereal

feelpaintbutshe

Emmaisacreativegirlwholovessolvingproblems.Oneday.herlittlebrothercomplainedthathistoys

alwaysfelloffthetable.Emmadecided1.him.Shethoughtfbrawhileandcameupwithan

idea:Shewouldbuildasmallshelf.

Emmagatheredsomematerials,2.wood,nails,andahammer.Shechosecheapbut3.

materialstokeepcostslow.Sheworkedcarefullyandslowlytomakesureeverythingwas

perfect.Herbrotherwatchedherandasked,"Howdidyoulearntobuildthis?,,Emmasmiledandsaid,"I

IcamtitfromDad.”

Afterafewhours,theshelfwasready.lt4.brightcoloursbyEmma.Herbrotherwassohappy

thathehuggedherandsaid,"You'rethe5.sisterintheworld!”Emmafeltproudandrealized

shelovedcreatingthings.

ThenEmmajoinedtheschool'sinventionclubandstartedworkingonmoreprojects.Shealwaysacted6.

fbrherideas.Herteachersaid,“Emma,youmightbecomeagreatinventoroneday!”Emma7.

excitedandcouldn'twaittoshareherideas.

第14页共24页

Thatnight,Emmalayinbedandthoughtabout8..future.Shedreamtofcreatinginventions

thatcouldhelppeopleandmaketheworldbetter.Sheknewitwouldtakehardwork,9.she

wasreadytokeeptrying.Shehopedherdrcamswouldbecomea10.oneday.Afterall,

inventingisallaboutcreativityandsolvingproblems.

第15页共24页

Unit5单元限时检测

I单项选择(8分)

()1.—Whatdoyouthinkisthegreatest?

—Theinternet.It'squiteimportantinourdailylife.

A.infbnnationB.invention

C.invitationD.introduction

()2.Manyyoungpeoplecan*taffordhouses,becausethehousesaretoo.

A.strongB.large

C.differentD.expensive

()3.Smarthomeappliances(智能家电)areusedinpeople'shomesthesedays.

A.luckilyB.widely

C.totallyD.exactly

(4.1hewillsellhishouse,becausehehasgotajobabroad.

A.makeB.suppose

C.decideD.suggest

()5.—Whichisyourfavouritesubject,Chincse,mathsorEnglish?

-.1likephysicsbest.

A.NothingB.Neither

C.NoncD.Noone

()6.Myfamilycan'tafford.anewhouse.Therefore,wehavetobuyasecond-handone.

A.buyingB.tobuy

C.buyD.bought

()7.Studentstofollowtheteachefsinstructionswhiletheyareinthelaboratory.

A.requireB.arerequired

C.requiredD.wererequired

()8.一Youknowwhat?JiangxiFlightUniversity.inNanchangin2023.

一Pmsoproudofit

A.setupB.setsup

C.issetupD.wassetup

第16页共24页

n完形填空do分)

Manyinventionsweretheresultsofaccidcnts.Todayweregoingtolearnabouta9.

invention—theraincoat.Doyouknow10.itwasinvented?

Ithasbeenmorethantwothousandyearssincewebegantouseanumbrella.However,peopleoftenfelt

itnotconvenienttoholdanumbrella11.doingsomethingwithhands.Thentheraincoatwas

invented.

ItissaidthattheraincoatwasinventedbyMacintoshin1823.Macintoshwasa(n)12.inan

eraserfactoryinScotland.Oneday,hepouredtherubberliquid(橡月交*夜体)overhiscoatcarelessly

whenmakingerasers.Hewastoo13.tocleanitandwentbackhomewiththedirtycoat.On

thewayhome,itrainedheavily.Macintoshdidn*thaveanumbrella,sohehadtorunhome14.

Whenhegothome,he15.thewetclothes.Tohissurprise,theareaofthecoatwithrubberover

itwasn'twet."Whynotmakearubberraincoat?,,Macintoshtold16..Thenextday,hebrushed

therubberliquidalloverhiscoat.Heworethe"rubbercoatHonrainydaysandtookawalkoutsidetotest

ifitcouldreallykeep17.therain.Surprisingly,theclothesinsidethe"rubbercoat"werenot

wetalall.Sotheraincoatwasinventedinthisway.

Therubberraincoatssoon18.inthemarket.Yearafteryear,peopletriedtoimprovethe

raincoats.Todayraincoatsarewidelyusedinourdailylife.

09.A.beautifulB.colourful

C.usefulD.careful

()10.A.whatB.how

C.whyD.where

Oil.A.afterB.until

C.whileD.before

()12.A.scientistB.worker

C.astronautD.pilot

()13.A.cleverB.relaxed

C.tallD.busy

()14.A.suddenlyB.quictly

C.quicklyD.slowly

()15.A.putoffB.puton

C.tookoffD.pickedup

()16.A.myselfB.himself

C.herselfD.yourself

第17页共24页

()17.A.onB.with

C.offD.in

()18.A.foundB.produced

C.appearedD.made

川阅读理解(16分)

A

Nineyearsago,HemanBekelereceivedagift-achemistryset.Heusedittomake"potions(药水)”.

Atthattime,onlyhisparentsknewhiswork.Now,attheageof16,thcrcarcalotmorepeoplewatching

hiswork.

InOctober2023,3MandDiscoveryEducationnamedHernanasthewinneroftheirYoungScientist

ChallengewithaprizeofS25,000becauseheinventedasoapthatcouldonedaybeusedtotreatsome

kindsofskincancer(皮肤癌).

HemanwasbominAddisAbaba,thecapitalcityofEthiopia,inAfrica.HemovedtotheUSwithhis

familyat4.HeremembersseeingpeopleinAfricaworkinginthehotsunwithoutanyprotectionfortheir

skin,andthatcanbethemaincauseofskincancer.

SkincancertreatmentsusuallycostaboutS40,000.Hemanwonderediftherewasacheaperway.He

thoughtofaddingaskincancermedicinetosoap.

*'Whatissomethingthateveryoneisabletobuy?"Hcmanthoughttohimsclf.t4Evcryoncusessoapand

waterfbrclcaning.Thcrcfbrc,soapwouldprobablybethebestchoice,,1

Itcouldtakeyearsbeforethesoapisreadytobesold.ButHeman,the10thgraderatWoodsonHigh

School,isdetermined.Overthesummer,hespenteveryweekdayinalab.Whenhegoesbacktoschool

thisfall,he'llbeinthelablessoften.Buthellkeepworkinghardtomakehisdreamcometrue.

HernanencouragesallkidstodreambigJ'Justkeepinventingthings,"hesays/'Keepthinkingofnew

waystoimproveourworld.”

()19.WhendidHernangetthechemistryset?

A.In2026.

B.About6yearsago.

C.Whenhewasinthe10thgrade.

D.Attheageof7.

()20.Accordingtothetext,what'sthemainreasonfbrskincancerinAfrica?

A.ThesunlightinAfricaistoostrong.

B.Africansaremorelikelytogetill.

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C.Africansdon'tprotecttheirskininthehotsun.

D.Africansusesoapfbrcleaning.

（）2l.WhydidHernanchoosesoaptotreatskincancer?

A.Becauseifscheapandeasytouse.

B.Becausehisparentslikeusingsoap.

C.BecausetherearemanysoapcompaniesinAfrica.

□.Becausehecanonlyfindsoapinthelab.

（）22.What'sthemainpurposeofthetext?

A.ToexplainwhymanyAfricansgetskincancer.

B.ToshowhowHernan'sparentssupporthiminmakingthesoap.

C.ToexplainwhyHernan'ssoapisbetterthanotherproducts.

D.TointroduceHemanandhisinvention.

B

Studentspasstheirschoolworkthroughdifferenthands,fromtheirgroupleaderstotheclass

representative（课代表），andfinallytotheteacher.ltmightnotsoundtoodifficult,butsometimesit

cangowrongandtakesalotoftime.

Todealwiththisproblem,ZhangXiruifromShenzhenGezhiAcademyinGuangdongcameupwitha

usefii'tool——asmarthomeworkcollectionrobot.Thiswonhimfirstprizeinthe20thGuangdong

ProvincialChildren'sInventionAwards.

Therobotusesradiofrequencyidentification（RFID射频识别）technology——areaderandaspecialtag

（标签）thatcanshareiulbrinatiuiiwithouttouchingeacholhei.Thisway,itcanhelpfindandknow

whatitislookingfbr.Eachstudent'snotebookhasaspecialRFIDtagwithhisorhernameandthe

subject.Studentsonlyneedtoplacetheirnotebooksontherobot,andthemachine,,sees,,thenotebook,

readsitstagandtakesthenameoutofthenamelist."Teacherscancheckwhohasn'thandedin

homeworkbyconnectingtheirphoneswiththerobotthroughWi-Fi,"the13-year-oldboyexplainedto

ShenzhenSatelliteTV.

Now,hc*splanningtodevelopathird-generationandhopestouseultra-high-frequency（超高频）radio

technologytoreadlotsofRFIDtagsfromfaraway.That