2025年中考英語(yǔ)二輪復(fù)習(xí)：閱讀理解（科普知識(shí)）提升練習(xí)題

閱讀理解（共20小題）

1.（2024?涼州區(qū)三模）

TheGreatSphinxofGiza.

MostscientistsagreetheGreatSphinxofGiza（吉薩獅身人面像）wasbuiltaround2,500B.C.ButJohn

AnthonyWestsaysthatit*smucholder.Ifhe'sright,"everythinganybodyhaslearnedaboutancientcivilizations

（文明）wouldhavetobecompletelyrevised.nhetoldamagazine.

West,awriterandfilmmaker,firstgotinterestedinancienthistoryafterstudyingtheworkofaFrench

researcher.TheresearchersaidEgyptiancivilizationcouldhavedevelopedasearlyas30,000yearsago,rather

than4,500yearsago,asmostexpertsbelieve.

Westjoinedascientisttodoresearchtogether.TheirresearchsuggestedthattheSphinxhadbeenworndown

（磨損）overtheyearsbywater,ratherthanbysandandwind.

Waitaminute?Water?Howcouldthatbe?TheSphinxisintheSaharaDesert,whichhasbeendryfor12,

000years!However,beforethattime,itwasverygreen.Ifit'struethatwaterworedowntheSphinx,West

thinksthatitmusthavebeenbuiltcenturiesearlier.

WhetherWestisrightorwrong,it'simportanttochallengeacceptedideas.That'showscienceprogresses.

Westgavesomeadviceforkids：Ifyouareinterestedinatopic,readeverythingyoucanonit.Doyourown

research.Don'talwaysbelieveeverythingyourteacherstellyou.Asklotsofquestions,andfindyourownanswers.

（1）Whatdoestheunderlinedword"revised"inParagraph1mean?

A.Connected.

B.Created.

C.Changed.

D.Controlled.

（2）MostscientistsbelievedEgyptiancivilizationdeveloped.

A.4,500yearsago

B.6,000yearsago

C.12,000yearsago

D.30,000yearsago

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(3)FromWest'sresearch,wecanknowtheSphinxwasworndownby.

A.sand

B.water

C.wind

D.heat

(4)WhatdoesParagraph4mainlytalkabout?

A.TheplacewhereWestdidhisresearch.

B.TheperiodwhentheSphinxwasbuilt.

C.ThereasonwhyWestholdshisopinion.

D.ThetechnologywhichwasusedtobuildtheSphinx.

(5)Whichofthefollowingmaythewriteragree?

A.Scienceprogressesthroughgivingdifferentopinions.

B.Egyptiancivilizationshouldbeearlierthanwethought.

C.Oneshoulddosomeresearchbeforegivingtheiropinions.

D.Kidsshouldasklotsofquestionsandbelievewhattheirteacherssay.

2.(2024?鹽城一模)Whilethestartofanewschoolyearisalwaysexciting,thisyearwasevenmoresoforsome

studentsatWhiteCloudPrimarySchool.Theybecametheworld'sfirstkidstobetaughtbyanelectronic

teacher.Thiselectronicteacherisnotahuman-likerobotwalkingaroundtheclassroom.Instead,heisa

computer-createdheadthatappears,whenneeded,onstudentscomputerorphonescreens.HisnameisBill.

CreatedbytechnologycompanySmartMachines,Billisabletoshowhuman-likebehavior.Heisdesigned

toteachaspecialprogramaboutenvironmental-friendlypowercreatedbythesunandwind.Thisprogram,

startedin2005,usedtobetaughtbyhumanteachers.

Justlikehumanteachers,Billisabletoimmediatelyrespondtothestudents'questionsandopinionsabout

thetopic.Thankstocomputercameras,heisalsoabletoseeandreacttostudentsphysicalactions.Forexample,

ifastudentsmilesatBill,herespondsbysmilingback.Thistwo-wayexchangehelpsgetthestudents'

attention.Moreimportantly,itallowstheprogramdeveloperstoimproveBillsbehaviorandknowledgebase

whenneeded.

Theprogramhasbeenagreatsuccess,accordingtoSmartMachinesspokesmanRobertFrostFrostsays,

"Whatisinterestingtomeisthechildren'sreactiontoBill.Hereallycapturestheirattention."Frostthinkskids

don'tfindtheexperienceofbeingtaughtbysmartmachinesasstrangeasolderpeoplebecausetheyhavegrown

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upinatimeofcomputersandsmartphones.

Itisdoubtful,however,thathumaneducatorswilllosetheirjobstoBillanytimesoon.Forone,histalking

head'sknowledgebaseisnotlarge.Moreimportantly,eventhesmartestcomputerprogramscan'tguessandreact

toalltheunexpectedsituationsthateducatorsfacedaily.Billsfuturemightbeasanpersonaltutor**,providingkids

withone-on-onehelpfordifferentsubjectsandtopics.

(1)WhatisBill?

A.Ahuman-likerobot

B.Akindofcomputergame

C.Acomputerrecordingtool

D.Acomputer-createdtalkinghead

(2)Howdoesthetwo-wayexchangehelptheprogramdevelopers?

A.Itletsthemcorrectstudents*mistakes

B.ItallowsBilltorespondmorequickly

C.IthelpsthemknowhowtoimproveBill

D.Ithelpsthemstudystudents*bodylanguage

(3)Theunderlinedword"they"inParagraph4refersto.

A.kids

B.olderpeople

C.smartmachines

D.programdevelopers

(4)WhatisBillNOTgoodatdoing?

A.Attractingstudents*attention

B.Understandingbodylanguage

C.Respondingtostudents*questions

D.Dealingwithunexpectedsituations

(5)HowmightBillbeusedinthefutureaccordingtothelastparagraph?

A.Toworkashumanclassroomteachers

B.Toencouragestudents*interestincomputers

C.Togivestudentspersonalhelpwithdifferentsubjects

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D.Towatchoverthebehaviorofthestudentsintheclassroom

3.（2024?市中區(qū)校級(jí)二模）Canplantstalk?Modemresearchhasfoundsomethingamazing：theydo

communicatewitheachother.

Ithasbeenknownforsometimethatplantsusechemicalstocommunicatewitheachother.Thishappenswhen

aplantgetsattackedbyinsects.Theplantgivesoutchemicalsfromtheleavesthatarebeingeaten.Thisislikea

warning,oracallforhelp：'Tmbeingattacked!"Whenanotherplantgetsthechemicals,itstartstogiveoutits

own,differentchemicals.Someofthesechemicalsdriveinsectsaway.Othersattractthewasps（黃蜂；蜜

蜂）!Thewaspskilltheinsectsthatareeatingtheplants.Scientistshopetolearnmoreaboutthisplantwarning

system,sothatwecanuseittogrowmorecrops.

Moresurprisingly,plantsalsousesoundtocommunicate.Peoplecan'thearthesesounds,butplantsare

makingthem.Someplantsmakenoiseswiththeirroots.Cornandchiliplantsdothis.Sometreesmakeclicking

noiseswhenthereisnotenoughwater.

Mostsurprisinglyofall,plantshaveanamazingsystemofcommunicationthatcanlinknearlyeveryplantin

aforest.Scientistscallthissystemthe"woodwideweb”.Thewoodwidewebislinkedundergroundbyfungi（霉

菌）.Itlinkstherootsofdifferentplantstoeachother.ltisinsomewayssimilartotheInternetweuse.Usingthe

woodwideweb,plantscanshareinformationandevenfoodwitheachother.However,itmayleadtobad

effects.Plantsmayuseittostealfoodfromeachother,orspreadchemicalstoattackotherplants.Perhapsoneday

scientistswilllearnhowtocreatea"firewall"tohelppreventtheseattackswithinthewoodwideweb.

Scientistsarelearningmoreeverydayaboutthesecretwaysinwhichplantstalktoeachother.Maybeone

daywewillknowenoughaboutplantcommunicationtobeableto"talk"withthemourselves.

（1）Whatwillplantsdowhentheyareattackedbyinsects?

A.Theywillkilltheinsectsbythemselves.

B.Theywillcontrolthewaspstokilltheinsects.

C.Theywillsendoutsignalstoaskforhelp.

D.Theywillproducechemicalsasawarningoracallforhelp.

（2）Howarethewoodwideweblinkedbyfungi?

A.Bymakingnoiseswiththeirroots.

B.Byconnectingtherootsofdifferentplantstoeachother.

C.Bysharingfoodandinformationwitheachother.

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D.Byspreadingchemicalstoeachother.

(3)Whatisthewriter'sintention(意圖)ofthelastparagraph?

A.Togivepeoplehopeforfurtherstudies.

B.Topraisescientistsfortheirgreatachievements.

C.TocallonpeopletoprotecttheplantsonEarth.

D.Toinspirepeopletocommunicatewithplants.

(4)Whichisthebesttitleforthepassage?

A.TheSecretLanguageofPlants

B.TheStudyaboutthePlantWarningSystem

C.ThePlantsthatGiveWarnings

D.WhyScientistsDoResearchaboutPlants

4.(2024?東?？h模擬)Tomatoestastegreat.Withalotofvitamins,theyaregoodforyou,too!Peopleallover

theworldenjoythisamazingfruit.

Notalltomatoesarered.Theycanbeyellow,orange,pink,orwhite.Alltomatoesaregreenbeforetheyare

readytobepicked.Thenthetomatoesturntheirtruecolor.That*swhenthey'rereadytoeat!

TomatoesfirstgrewintheAmericas.TheIncasgrewthemover1,000yearsago.Theywereintroducedto

EuropebytheSpanishintheearly16thcentury.TheSpanishandItaliansseemtohavebeenthefirstEuropeansto

acceptthemasfood.InFrance,peoplegrew.Tomatoesinthegardenjusttoenjoytheirbeauty.Manypeoplethere

thoughttomatoeswouldmakethemsick.Itwasyearsbeforesomeofthemwouldeattomatoes.

Tomatoesarefruits.Theygrowfromseeds.Theywon'tgrowincoldweather.Butwithwater,sunlightand

warmth,tomatoesgrowfast.Theycangrowinpotsorintheground.Astheplantgrowstaller,peoplemaytieitto

astick.Nextisthebloomingstage.Flowersappear.Theflowersturnintofruit.Somekindsoftomatoescanbe

pickedinaboutsixmoreweeks.Sometomatoesarelarge.Onekindoftomatocanweighasmuchastwopounds.

Youcaneatrawtomatoes.First,washthem.Then,cutthemupforsaladsorsandwiches.Tomatoescanbe

cooked,too.Theycanbegrilled,boiled,orevenfried.Doyouuseketchup?Itismadefromtomatoes.Tomatoes

don*thaveasmell.Buttheytastegreatinfoodsaroundtheworld.ManydishesfromIndiausetomatoes.Spaghetti

sauceandpizzafromItalyusethem,too.RawtomatoesareinMexicansalsa.

(1)Fromthepassage,weknowthattomatoes.

A.comeindifferentcolors

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B.grewinEuropefirst

C.cangrowinallweathers

D.haveaspecialsmell

（2）Theunderlinedphrase"someofthem”inParagraph3refersto.

A.somepeopleinInca

B.somepeopleinItaly

C.somepeopleinFrance

D?somepeopleinSpain

（3）Whichofthefollowingbestshowsthestructureofthepassage?_____

A.⑤

（4）Whichofthefollowingisthebesttitleofthepassage?

A.ValueofTomatoes.

B.AllaboutTomatoes.

C.IncasandTomatoes.

D.GrowingGreatTomatoes.

5.（2024?中江縣三模）Inthefuture,peoplemaytraveltoMars（火星）bywater-poweredspaceship!Today*s

spaceshipsarefineforgettingthingsintospace,buttheyarenotsogoodattravellinglongdistances.These

spaceshipsburnchemicalfuels（燃料）andtheyareveryexpensive.Scientistssaythatawater-powered

spaceshipcouldmakethetriptoMarsmuchcheaper.Theideaisjustintheplanningstagesnow，butscientists

thinksuchaspaceshipcouldbedevelopedsoon.

Thekeytothewater-poweredspaceshipistheengine（發(fā)動(dòng)機(jī)）.Regularenginespushspaceshipsby

burningfuel.Thewaterenginewillusesteam,createdbysolarpanels（太陽(yáng)能板）thatheatwatertoahigh

temperature.Ofcourse,thespaceshipwillhavetocarryalotofwaterforthelongtriptoMars.

Today*sspaceshipscouldnotcarrythatmuchwater.Butscientiststhinkthataspaceshipblownuplikea

balloonwillbeableto.

OneUScompanyhasalreadydevelopedaspaceshiplikethis.Thesespaceshipsaremadeofastrong

material.Twoofthemhavealreadybeensentupintospace,usingrocketsandthenlaterfilledwithair."Balloon*'

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spaceshipscouldbeverylargeandcarryenoughwaterforalongtrip.WiththeHBalloon',spaceships,enoughwater

couldbecarriedtopowertheenginesandgrowfoodduringthetrip.Andthepeopleonthespaceshipmighteven

gettotakeahotbath!

Scientistssaythebiggestadvantageofsuchaspaceshipwouldbecost.The,'Balloon',spaceshipuseswaterto

pushitthroughspaceandcostsaboutonethirtiethofanormalspaceship.Suchsavingsnaturallyencourage

continuedresearchintoballoonspaceshipsandwaterengines.Ifthesescientistsarecorrect,wemaysoonbeon

ourwaytoMarsinaspaceshippoweredbywater.

(1)Whichsentencebestdescribesthemainideaofthepassageabove?

A.Thekeytothewater-poweredspaceshipistheengine.

B.Inthefuture,peoplemaytraveltoMarsbywater-poweredspaceship.

C.OneUScompanyhasalreadydevelopedaspaceshiplikethis.

D.Scientistssaythebiggestadvantageofsuchaspaceshipwouldbecost.

(2)Whatdoyouthinkisomitted(省略)attheendoftheunderlinedsentence?

A.usesteam

B.pushspaceships

C.heatwater

D.carrythatmuchwater

(3)Besidesgrowingfood,whatelsemightastronautsdowiththerestofthewater?

A.Takeahotbath.

B.Freezedangerousthings.

C.Blowupaballoon.

D.ChangethesurfaceofMars.

(4)Onwhichwebsitecanweprobablyreadthispassage?

A./power

B./music

C./culture

D./spaceflight

6.(2024?洪7同縣二模)Onlyhumansspeakusingwords.Butallkindsintheanimalworldcancommunicatein

onewayoranother.Maybeyouhaveheardaboutthewaybeesdancearoundtosendmessagestoeachother

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andthewaydogsbarkindifferentwaystogivewarnings,tobefriendlyortobeplayful.Butdidyouknow

aboutinfrasoniccommunicationusedbyelephants?Thisishowitworks：

Humanshearlowsoundslikethunderrumblinginthesky.Butwedon'thearsoundslowerthan

this.However,animalssuchaselephantsandhipposcanhearmuchlowersoundsthanhumanscan.Andwhat*s

more,theycanmakethoselowsoundsaswell,andtheyusethemtocommunicatewitheachother.Thisisknown

asinfrasound.

Theamazingthingaboutinfrasoundisthatittravelsoverseveralkilometers.Higher-levelsoundslikethe

onepeoplecanhear,don*ttravelwellthroughwalls,leaves,treesandsoon,whichiswhywecan'thearsounds

frommorethan100metersaway.Butinfrasoundismuchstrongerandthingslikegrassandtreeshaveno

influenceonit.Therefore,itcantravelmuchfurther.Elephantscanhearinfrasoniccallsfromfourkilometers

away!

Therehavebeenreportsofpeoplewatchinggroupsofelephantsfeedingorrestingandthentheelephants

suddenlyallstoppedwhattheyweredoingfornoreasonatall.Theyobviouslyheardawarningcallfromalong

wayaway，butthepeopledidn'thearasound.Inplaceslikeazooorwildlifeparkwhereyoucangetnearerto

animals，itisabiteasiertosensewheninfrasonicsoundsaremade.Whenyoustandnearmotherelephantswith

theirbabiesinazoo,youmaynoticeaslightrumblingintheaireveryfewminutes-notloudorstrong,but

clearlynoticed.Thisisinfrasoniccommunication-themotherelephants"talking"totheirbabies.

(1)WhydoesthewritermentionbeesanddogsinParagraph1?

A.Becausetheyuseinfrasoniccommunication.

B.Becausetheycommunicateliketheelephants.

C.Becausetheyareexamplesofanimalcommunication.

D.Becausepeoplewanttolearnhowtheycommunicate.

(2)WhichofthefollowingisTRUEabout'infrasound'?

A.Humanscanhearinfrasoundeasily.

B.Ittravelsnearlyseveralkilometers.

C.Itsoundslowbutcan'ttravelveryfar.

D.Ittravelswellthroughwalls,leavesandsoon.

(3)Inplaceslikezoos,.

A.elephantsdon*tneedtomakeinfrasonicsounds

B.itiseasierforelephantstomakeinfrasonicsounds

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C.motherelephantsdon'tletpeoplestandneartheirbabies

D.humanscaneasilysenseinfrasonicsoundswhentheyaremade

（4）Whichwouldbethebesttitleforthepassage?

A.Talkingtohumans

B.Talkingtoanimals

C.Playingwithhumans

D.Playingwithelephants

7.（2024?福田區(qū)三模）Computers,smartphonesandothermachinesaretheperfectservantsbecausetheyalways

dowhattheyare"told".WeusuallynteHHthemtodothingsbyusingamouseorkeyboard.Butwhatifwecould

justtalktothemnormallyandtellthemWhattodo?

Thistypeoftechnologyknownasvoicecontrolorvoicerecognition（識(shí)另U）hasbeenshowninfilmsand

TVshowssincethe1960s.TheTVshowSlarTrekshowedsomespaceshipswhichcouldreplytohumanvoice

commands.Thefilm2001：ASpaceOdysseyshowedacomputerthathumanastronautscantalkto.ltwasmainly

usedtoplaychessandrepairastronauts*spaceship.

Ontheotherhand,thereal-worldvoicerecognitionisusedformoreeverydaytasks.Forexample,Apple

andAmazonmadetwopiecesofvoicerecognitionsoftware（軟件）.Theycanbeaskedtodomanythings,suchas

settingalarms,playingmusicandsoon.

Oneofthenicethingsaboutvoicerecognitionisthatitcanbeusedwhenweareonthego.Whenyouare

drivingacarorwalkingdownthestreet,it*snotconvenientorevendangeroustopickupyoursmartphoneor

typeawayonthekeyboard.Voicerecognitionallowsyoutofocusonwhateveryouaredoingatthemomentwhile

stilldoingothertasks.

Speechrecognitionsoftwareisalsohelpfultodeafpeople.ltcanbeusedtolistentospokenwordsandturn

themintotextthatdeafpeoplecanread.Somespeechrecognitionsoftwarecanevenhearwordsspokeninone

languageandthentranslate（翻譯）themintoanotherlanguage.

（1）Weusuallycontrolmachinesindailylife.

A.byusingbodylanguage.

B.bytalkingtothem.

C.byusingamouseorkeyboard.

D.byconnectingthemtotheelectricity

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(2)Howdoesvoicerecognitionhelptokeepyousafewhiledrivingacar?

A.Ithelpsyoutofocusonwhatyouaredoing.

B.Itallowsyoutotypeonthekeyboardmoreconveniently.

C.Itcancontrolyourcarforashortwhile.

D.Itcanhelpyoutoreceivephonecallssafely.

(3)Whatdoestheunderlinedword"convenient'*meaninChinese?

A.快速的

B.方便的

C.積極的

D.敏感的

(4)Inthelastparagraph,wecaninfer(推斷)aboutthespeechrecognitionsoftware.

A.canhearwordsspokeninEnglishandthentranslatethemintoChinese

B.canturntextintospokenwordsfortheblind

C.canhelpyoudoanythingthatyouwanttodo

D.canhelpimitateothers'voices

(5)Whatisthebesttitleforthispassage?

A.ComputersCanTalktoHuman

B.VoiceRecognition：AHelpfulFriendoftheDeaf

C.ComputersCanHelpAstronauts

D.VoiceRecognition：AHelpfulFriendofHumanLife

8.(2024?定結(jié)縣一模)SomeFunandInterestingFacts

?Doyouthinkwhatcolororangesare?ThecommonanswertothisquestionisnOrangeH.However,thefirst

orangesfromSoutheastAsiawereactuallygreen.Uptonow,orangesinwarmerareaslikeVienamandTailand

stillstaygreenwhentheyarefullygrown.

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?TherewasamannamedJohnChapmanwhoplantedthousandsofappletrees.Buttheapplesonthosetrees

weremuchmorebitter（苦的）thantheonesyou'dfindinthesupermarkettoday.Johndidn'texpectapplesto

beeatenwhole,butrathermadehardapplecider（蘋(píng)果酒）.

?Likemostfour-leggedanimals,catshavefivetoesonthefrontpaws,buttheirbackpawsonlyhavefour

toes.Scientiststhinktheyfour-toebackpawsmighthelpthemrunfaster.Doyouknowanyotherfunfact

aboutcats?

?WaltDisneymighthavebeenthefirsttoputglovesonhischaracters,asthestarMickeyMousein1929's

TheOpryHouse（《奧普里之屋》）.Besidesbeingeasiertointerest,there'sanotherreasonwhyDisneydidso：

"Wedidn'twanthimtohavemousehandsbecausehewassupposedtobemorehuman."Disneyoncesaid.

（1）Whatdoestheunderlinedword"they"referto?

A.Warmerareas.

B.Orangesinwarmerareas.

C.Thefirstoranges.

D.PeoplefromVietnamandThailand.

（2）Johnexpectedhisapplestobe.

A.knownbymorepeople

B.soldinthesupermarket

C.eatenonlybyhimself

D.madeintohardapplecider

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(3)Howmanytoesdoesanormalcathaveintotal?

A.Fourteen.

B.Sixteen.

C.Eighteen.

D.Twenty.

(4)DisneyputglovesonMickeyMouseinorderto.

A.makehimlookmorehuman

B.protecthishands

C.helphimtorunfaster

D.makehimfeelmorecomfortable

(5)WhichisNOTafactaccordingtotheinformationabove?

A.Thefirstorangesweren'torange.

B.John'sapplesweren'tsweetenough.

C.WaltDisneyputglovesonhischaracterstointerestpeople.

D.Catshavefewertoesontheirfrontpawsthanthenonesontheirbackpaws.

9.(2023?海南模擬)Chemicalreactions(反應(yīng))makeforsomegreatexperiments.YoucanmakeuseoftheCO2

(carbondioxide)givenoffbyabakingsoda(小蘇打)andvinegarreactiontoblowupyourballoon!

Whatyou'llneed

★Balloon

★About40mlofwater

★Softdrinkbottle

★Vinegar

★Ateaspoonofbakingsoda

Instructions

★Beforeyoubegin,makesurethatyoupulltheballoonlongtomakeitaseasyaspossibletoblowup.

★Putthe40mlofwaterintothesoftdrinkbottle.

★Addthebakingsodaandmixitwithwater.

★Putthevinegarinandquicklyputtheballoonoverthemouthofthebottle.

What'shappening?

IfallgoeswelLthenyourballoonshouldinflate!Addingthevinegartothebakingsodacreatesachemical

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reaction.Thebakingsodaisabase,whilethevinegarisanacid.Whenthetwocombine(結(jié)合)，theycreate

CO2.Thegasrisesupandescapesthroughthesoftdrinkbottle.However,itdoesn'tescapetheballoon,pushingit

outwardsandblowingitup.

(1)Whatdoesabakingsodaandvinegarreactiongiveoff?

A.02

B.03

C.CO2

D.H2O

(2)Whatshouldyoudobeforeyoubegin?

A.Heatthewater.

B.Drinksomejuice.

C.Blowuptheballoon.

D.Pulltheballoonlong.

(3)Whatdoestheunderlinedword"inflate”meaninChinese?

A.漲價(jià).

B.膨脹.

C.吹捧.

D.抬閾

(4)Whatcanbeusedinsteadofvinegar?

A.Milk.

B.Water.

C.Tea.

D.Lemonjuice.

(5)Thetextisabout.

A.anexperiment

B.agame

C.afilm

D.abook

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KkhgtediandVinter

KaltoooExperiment

10^(2023?姑蘇區(qū)校級(jí)二模

SecretCommunication

DoyouHanttosendaPutlemonjukeImowater

messagetoRfriendandmix.

sccrctf>?Hereisaway

tomakesecretWetiwibwith

communication.fuiceandwater

mitiureand

writesomewords

oatbcpupcr.

Halfofalemon

Acuporasmall

glasswilbfour

spoonsofwater

InIL

Cottonsw?b*Letw(paper

(drywell.Snow

Wh"。paH?rk(oyourfriend

FlertrlchmpaodaskIfbeor

shecanseea

mesmg*onit.

NO!

Holdthepapdclosecoan

electriclumptohratK.Can

yourfriendssee(hewriliog

no*t?YES!Wordsappear!

\\liafhnppcnvd?

Lemonjukeh”cbcmlcuhwith

carbon*.Thecbemlcalfbreak

downeasilywhenIhey?reheated,

andthecarbonnuikesCbcm?

darkcolor.

(1)Howmanystepscanwetaketomakesecretcommunication?

A.Two.

B.Three.

C.Four.

D.Five.

(2)Tomakewordsappear,thepapermustbe.

A.putintowater

B.writtenwithadryswab

C.heatedbyalamp

D.heldfarawayfromlamps

(3)Whichpartofamagazineisthepassageprobablyfrom?

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A.HealthyFood.

B.ClosetoNature.

C.EnergySaving.

D.ScienceinDailyLife.

11.（2023?建昌縣二模）Thereisnothingasenjoyableashavingadayoutinthefreshairandsunshine,butif

you'renotcareful,youmaygetsunburned.Youmightbesurprisedtolearnthatnotonlyhumansget

sunburned.Thisisaproblemforsomeanimals,too.

Animalswithoutmuchhairsuchaselephantsandpigsaremostlikelytogetsunbumed.Luckily,manyof

theseanimalshavetheirownwaystoprotecttheirskin.

Pigs,forexample,liketorollinthemud（在泥里打滾）.Thisisn'tadirtyhabitlnfact,thecoatingofmud

keepsthemcoolinhotweatherandprotectstheirskin.Similarly,elephantsthrowsandontheirbacksandheads

foruseasakindofnaturalsunblock（防曬霜）.

Landanimalsaren'taloneinhavingtroublewithsunbum.Whalesalsofacethisproblem.It'sagoodthingthat

bluewhales*cells（Z田胞）canrepairskindamage（皮膚損傷），soth