沖刺2024年中考英語必考題型終極預(yù)測（深圳專用）

專題02閱讀理解

（2022?廣東?深圳市南山外國語學(xué)校（集團(tuán)）二模）

Apairoftusks（長牙）isusuallyanadvantageforelephants,allowingthemtodigforwater,peelbark

（剝樹皮）forfoodandprotectthemselves.Butbecauseofillegallyhunting,thosebigtusksmayinvitedanger.

NowresearchersarcworkingouthowyearsofcivilwarandhuntinginMozambiquehaveledtoagreater

numberofclcphiintsthatwillneverdeveloptusks.

Duringthewarfrom1977to1992,fightersonbothsideskilledelephantsforivorytoprovidefundfor

thewar.IntheGorongosaNationalPark,around90%oftheelephantswerekilled.Thesurvivorsshareda

keyfeature:halfthefemaleswerenaturallyluskless—theysimplyneverdevelopedtusks—whilebefore

thewar,lessthanafifthlackedlusks.Moreconfusing,two-ihirdsofthenew-bornelephantswerefemale.

Likeeyecolorinhumans,genes（基因）areresponsibletorthis.Theyfoundthatthemothershave

producedthesmoking-gungenesforgeneticchanges.Theypassthechangedgenetobothsonsanddaughters,

butthesonsarclikelytodieearlyindevelopment.Daughtersstaybytheirmother,manygrowingtusklcss.

Mostpeoplethinkofdevelopmentassomethingthatgoesonslowly,buthumanscanspeeditup."When

wethinkaboutnaturalselection,wethinkaboutithappeningoverhundreds,orthousandsofyears,“said

SamuelWasser,ascientistattheUniversityofWashington.**Thefactthattusklessnesshappenedover15

yearsisoneofthemostsurprisingf^ndings.^^

Nowthescientistsarestudyingwhatmoretusklesselephantsmeanforthespecies（物種）andits

environment.kiThcchangeswilllastfbratleastquiteafewelephantgenerations.Ifanelephantdoesn'thave

thetooltopeelbarkfromtrees,thenwhatchainreactionswillhappen?”

1.WhathashappenedtotheelephantsinMozambique?

A.Tuskshavehelpedelephantsalot.B.Quietafewelephantsbecametuskless.

C.Tusksprotectedelephantsagainstwars.D.Tusksbecameadangertoelephants.

2.Whatcausedthekillingofelephantsfrom1977to1992?

A.Toomanyfemaleelephants.B.Notusksoftheelephants.

C.Moneyneededforthewar.D.Only10%maleelephants.

3.Whichofthefollowingcanbestexplaintheunderlinedword"smoking-gun“inParagraph3?

A.wrongB.carelessC.trueD.useless

4.HowdoesthescientistSamuelWasserfeelabout(hedevelopmentoftheelephants?

A.Interested.B.Pleased.C.Disappointed.D.Shocked.

5.Whatcanweinferfromthelastparagraph?

A.Theelephantswilldevelopmoretusksastimegoesby.

B.Theelephantsmaydiefromhungerwithhuman'sactivities.

C.Theelephantscanbefedonthemselveswithscientists'help.

D.Theelephantscanchangetheenvironmentintheirownway.

(2022.廣東.深圳市南山外國語學(xué)校(集團(tuán))一模)

StudentsenjoyedthelatestsciencelecturegivenbyastronautsonboardChina'sTiangongspacestation

onWednesday,March23.TheShenzhouXIIImembersgavetheirsecondsciencelesson,alsocarryingout

experiments.Inoneexperiment,WangusedatoyofBingDwenDwen,thepopularmascotofthe2022

BeijingWinterOlympics,toshowhowthingsflyinaweightlessenvironment.Theyalsoshowedstudents

twopiecesofcutting-edgescientificequipmentinsidethespacestation.

Beforeending(helecture,(heastronautsansweredquestionstakenfrommembersof(hepublicand

raisedbystudentsa(thegroundsites.Thequestionscovereddifferentpartsoflifeandworkinspace,such

ashowtotakecareoftheirskin,whethertheycandrinkhotwater,ifthemoonlooksdifferentfromthe

Tiangongstation,andhowtearsmoveinamicrogravitationalenvironment.

Attheendoftheclass,Wangtoldtheaudiencethatinthecoiningmonths,twolargespacelabs一

Wentian,or“questfbrtheheavens”,andMengtian,or“dreamingoftheheavens,,一willbelaunchedinto

spacetobewiththeTianhcmodule（艙）tocompletetheTiangongstation,andthenChinawillhavestronger

abilityinspace-basedscientificexperimentationandthe“Tiangongclass''willbecomemoreinteresting.

PangZhihao,anoldspaceflightresearchersaidtheclasswillbean^eye-opener''fbrteenagersbecause

ithasplantedthedreamofscienceinthem.<lManyscientistswerecreatedbytheirinterestandcuriosity

about4strangethings'.Theexperimentsdonebytheastronautswillput"questionmarks'inourstudents'

mind,andtheteenagerswillthenmovetofindanswersandexploremoreplacesunknowntohuman.^^he

said.

6.WhatkindofexperimentsdotheShenzhouXIIImembersdo?

A.BingDwendwenthetoyexperiment.B.Thesecondscienceexperimentinspace.

C.Twopiecesofscientificexperiments.D.Thescienceexperimentswithoutgravity.

7.Whatarctheraisedquestionsconnectedwith?

A.Theastronauts'workandlifeinspace.B.Theastronauts,healthlikeskincare.

C.Themoonandthespacestation.D.Thetears'differentshapesinspace.

8.Whatwillmakeourcountrygreaterinspace-basedscientificexperimentation?

A.ThelabcalledQuestFortheHeavens.B.ThecompletingoftheTiangongstation.

C.Thelaunchingoftwolargespaceships.D.ThelabtobewiththeTianhemodule.

9.HowdoesPangZhihaofeelabouttheclass?

A.Interesting.B.Exciting.C.Valuable.D.Surprising.

10.Whichpartofthenewspaperdocsthearticlebelongto?

A.Opinion.B.Lifestyle.C.People.D.Health.

（2022?廣東北江實驗學(xué)校三模）LiMeixi,12,feelsanxious（焦慮的）aboutherlook—notherface,

butherdressing.Whensheseesfashionablepeopleonthestreet,shetrieslostayawayfromthem,because

shefeelssoshamefulthatshedoesn'tevenwanttowalkonthesamestreetwith（hem.WhatLiis

experiencingisfashionanxiety.Ittroublesmanypeopletoday.Theyareanxiousabouttheirdressing,afraid

ofbeingseenoutofstyle.

Abigreasonforanxietyisfashionbullying（礪凌）.Asfashionmagazinesandadvertisementsshowthe

“l(fā)atestandgreatest”trends（趨勢）,there'salotofpressureonpeople,especiallyonteenagers,tofollowthem,

nomatterhowmuchitwillcost.4tTheneedtobelongingroupsisveryimportanttoyounglearnersand

exclusion（排斥）issomethingtheyseeastheendoftheworld,“saidAndyCranhain,ateacherfromtheUK.

Anotherreasonisthatyoungpeoplemaynothaveasenseofself-identity.Itseemsthattheyfeelanxious

abouttheirdressing,butactuallytheythemselvesarenotconfidentenough.Theycareabouthowfashionable

peoplelookatthem.Theyeasilydoubtthemselves.Thetruthisthatthosepeopleusuallydon'tnoticethem

atall.

Fashiontrendscomeandgo,alwayschanging.Insteadoffollowing,thekeyistofindyourownstyle.

Ifyou5reabletowearclotheswilliconfidence,youwillbetheonestartingatrend.Moreimportantly,dressing

isonlyapartofyourappearance.Itcan'ttellthetrueyou.Whatreallymattersisyourpersonalityandabilities.

11.LiMeixiisanxiousabout.

A.herfaceB.herdressingC.herheightD.herweight

12.Peoplearcexperiencingmuchpressurefromaccordingtothepassage.

A.theirparentsB.theirtcachcis

C.moviesandTVshowsD.fashionmagazinesandadvertisements

13.AccordingtoAndyCranham,youngpeoplewantto.

A.dothingstheylikeB.learnbythemselves

C.gelintogroupsD.see（heworldbetter

14.Theunderlinedword“selAidentity”inParagraph3means.

A.self-controlB.self-confidcncc

C.sclf-improvcmcntD.self-learning

15.Whatisthepurposeofthepassage?

A.Tointroducethemostpopularclothesatpresent.

B.Tohelppeoplefollowthelatestandgreatesttrends.

C.Toadvisepeopletofindtheirownstyleandbeconfident.

D.Toteachpeoplehowtolearnfromfashionmagazines.

（2022?廣東?深圳市龍華區(qū)外國語學(xué)校三模）TheInternationalDayforBiologicalDiversity（生物

多樣性日）iscelebratedonMay22.Itsaimistoremindpeopletogetalongwiththenature.

Thedaywasfirstcreatedin1993bytheUNanditwasonDecember29th.In2000,theUNchangedit

toMay22.ThiswaspartlyinmemoryoftheUNconvention（公約）onMay22,1992.Butitwasalsohard

formanycountriestoorganizeeventsonDecember29,becausetherearcalreadymanyholidaysinthattime

oftheyear.Everyyear,thecelebrationsofthedayarcorganizedonadifferenttopic.Thetopic:n2022is

“Buildingasharedfuturefbralllife''.Themessagebehindisthatbiodiversityiswhatwecandependonto

buildabrightfuture.Itisalsotheanswertoseveraldevelopmentchallenges.

Biologicaldiversityarenecessaryforourdailylife.Forexample,fishprovide20%ofanimalproteinto

about3billionpeople.Over80%of（hehumandietisprovidedbyplants.Asmanyas70%ofpeoplefrom

countrysideindevelopingcountriesdependontraditionalplant-basedmedicinesforbasichealthcare.

Whilepeoplestarttoknow（hatbiologicaldiversityisvaluable,thenumberofspecies（物種）i$dropping

becauseofhumanactivities.ThatiswhytheUNdecidedtocelebratethedayeveryyear.

16.Whatdocs“it"meaninParagraph2?

A.TheUN.B.Thebuilding.C.Thedate.D.Theaim.

17.Whatcanwclearnfromthetopicof2022?

A.Wecanbuildabrightfutureforalllifebysharing.

B.Wecanusedifferentanimalstomakeourfuturebright.

C.Ifwehavedifficultydeveloping,wemayturntobiodiversity.

D.Iftherearefeweranimalsorplants,wewillhaveabrightfuture.

18.Howmuchofthehumandietisprovidedbyplants?

A.20%,B.70%.C.80%.D.100%.

19.Whatisthemainideaofthelasttwoparagraphs?

A.Thehistoryoftheday.B.Thecelebrationsoftheday.

C.Thecausesofthedeathofanimals.D.Theimportanceofbiologicaldiversity.

20.Wherecanwefindthearticle?

A.Anaturemagazine.B.Astorybook.C.Aguidebook.D.Acomicbook.

（2022?廣東?深圳市福CD區(qū)外國語學(xué)校一:模）WhenyouwalkinaChinesecityearlyinthemorning,

you'relikelytoseegroupsofpeopleexercisinginthepark.You'llseethemmovingthroughaseriesofslow

gracefulmovements.Astheirbodiesflowfromoneexercisetothenext,theirmindsarefocusedonlyontheir

deep,relaxedbreathing.

Taichiispartofnationalculturalheritage（遺產(chǎn)）whichChinesepeopletakepridein.Thisancientmind-

bodyexerciseisknownastaichi,andyoudon'thavetoliveinChinatobenefitfromit.Accordingtoa

surveyin2007,morethan2millionAmericansarccurrentlypracticingtaichi.

Taichiiscalledamind-bodytypeofexercisebecauseitcombinesmeditation,focusedbreathing,and

physicalmovement.Becauseit'salsoalow-impact(低強度的)exercise,itmaybeparticularlysuitablefor

olderadults,butit'sabeneficialexercisefbrpeopleofallages.

TaichidevelopedinChinaasatypeofmartialart.Todaytaichiisusedtodevelopfitness,meditation,

balance,breathing,andwell-being.

Iftaichiissomethingyoumightliketo(ry,lookfbrataichiclassnearyou.Keepinmindthattraining

programsaredifferentinmanyways.Youmightwanttoaskaroundforarecommendationortryaclass

beforeyousignup.Askpotentialtaichiinstructorsabouttheirtrainingandexperience.

Taichiisgenerallyconsideredalow-riskexercisethatisbothsafeandenjoyable.Ifyouhaveany

physicalormedicalproblems,talkwithyourhealthcareproviderbeforestartinganyexerciseprogram.And

remember,althoughtaichihasmanybenefits,itcan'ttaketheplaceofregularmedicalcare.

21.Whydoestheauthorgivetheexampleinparagraph1?

A.Todescribeascene.

B.Tointroducethetopic.

C.Tosummarizethetext.

D.Toguidethereadersaroundthecity.

22.Whatcanwcknowfromparagraph2?

A.Someforeignersareinterestedintaichi.

B.Taichimakespeoplehappy,wiseandenergetic.

C.Chinesepeopledon'ttaketaichiseriouslynow.

D.Taichiwasconsideredawaytolengthenone'slife.

23.Whatdoestheunderlinedword“medilalion"mean?

A.Hardtraining.B.Deepthinking.

C.Bodystretching.D.Violentexercising.

24.Whomaybenefitfrompracticingtaichi?

A.Oldpeople.B.Thepatients.

C.Youngpeople.D.Peopleofal)ages.

25.Whatisthebesttitleofthispassage?

A.DifferentSchoolsofTaiChiaroundtheWorld.

B.TaiChi—aNationalHeritageandWonderfulExercise.

C.ChineseMartialArts—theOriginandFormsofTaiChi.

D.TheAdvantagesandDisadvantagesofPracticingTaiChi.

（2022?廣東?深圳市福Hl區(qū)外國語學(xué)校三模）“Lifeisspeedingup.Everyoneisbecomingunwell.”

Thismaysoundlikesomethingsomeonewouldsaytoday.Butinfact,anunwellpersonwholivedinancient

Romewroteit.

Wealllovenewinventions.Theyareexciting,amazingandcanevenchangeourlives.Butisittruethat

havingallthesedevelopmentsreallyimprovesthequalityofourlives.

Picturethis:You'rerushingtofinishyourhomeworkonthecomputer.Yourmobilephonerings.A

messagefromyourfriendappearsonthescreen.Thenoisefromthetelephoneisgettinglouderandlouder.

Suddenlythecomputergoesblankandyouloseallyourwork.Nowyouhavetostayupallnighttogetit

done.

Inventionshavespeededupourlivessomuchthattheyoftenleaveusfeelingstressedandtired.Why

doyouthinkpeoplewholivefarawayfromnoisycities,whohavenotelephones,nocars,notevenany

electricityoftenseemtobehappier?Perhapsthatisbecausetheylivesimplerlives.

OnefamilyintheUKwent“backintoseewhatlifewaslikewithoutalltheinventionswchave

today.Thegrandparents,withtheirdaughter,andgrandsons,Benjamin,10,andThomas,7,spentnineweeks

ina1940shouse.Theyhadnowashingmachine,microwave,computerormobilephone.

Thegrandmother,Lyn,said,“Themorethingsyouhave,themoredifficultlifebecomes."Theboyssaid

theyfoughtless.Probably,theysaid,becausetherewaslesstofightover,suchastheircomputer.Benjamin

alsonoticedthathisgrandmotherhadchangedfrombeingafashionablegrannytoonewhocookedthings.

26.Whowasthequote（引語）inparagraph1writtenby?

A.Theoldgranny.B.Theunwellwriter.

C.AnancientRoman.D.Acreativeinventor.

27.Whatdoesthewriterwanttotellusinparagraph3?

A.Newinventionscanbringussometroubles.

B.Newinventionscanhelpusworkmoreefficiently.

C.Newinventionscanimprovethequalityofourlives.

D.Newinventionscanmakepeoplefeelrelaxedwhileworking.

28.Whydidthefamilychoosetospendsometimeina1940shouse?

A.Becausetheylovedtolivesimplelives.

B.Becausetheyweretroubledbymoderninventions.

C.Becausetheyallenjoyedbymoderninventions.

D.Becausetheywantedtoexperiencelifewithoutmoderninventions.

29.Whatcanweinferfromthelastparagraph?

A.Theirlifebecamesimpler.

B.Thefamilyenjoyedlivingtogether.

C.Theyfellinlovewiththeoldhouse.

D.Theyfelttheirlifewasfullofexcitement.

30.Whatisthepassagemainlyabout?

A.Thehistoryoftechnology.

B.Problemscausedbytechnology.

C.Thedevelopmentoftechnology.

D.Howtechnologyimprovesourlife.

（2022?廣東?佛山市南海外國語學(xué)校三模）

SouthChinaMallShoppingCoupons（優(yōu)惠券）Sixhoursfreeparking

Ifyouspend$100ormoreinourstores,youwillreceivesixhoursoffreeparking.Takethiscoupon

totheservicedeskonthefourthfloortostamp（蓋章）it!TheofferendsonNovember24.

Buyonegetonefree

BuyoneshirtortieatDanielMen'sWearandgetanothershirtortieofthesamevaluefree

Hurryup!TheofferendsonNovember14.

Wina$1,000CDcollection

Winyourchoiceof$1,（）（X）worthofCDsfromJBMusicStore.JustbuyanytwoCDsandyourname

willgointothecompetition.Select(挑選)yourownprizefromourmanykindsofrock,pop,jazzand

classicalmusic.

10%ofT

ShowthiscouponattheBookStoretogeta10%offonanybooksyoubuy.Theofferendson

November18.Wehavelotsofbookstochoosefromincludingchildren'sbooks,novelsandtravelguides.

You'resuretofindsomethingthatyouwillenjoy.

Freesoftdrinks

BuyanymealfbratleastS6atMike'sCafeandyou'llreceiveafreesoftdrink.Weservethebest

hamburgerandsnacksinthemall.TheofferendsonNovember20.Comeinandtryourdeliciousmeals

andourexcellentservice.Youwon'tbedisappointed!

Halfpricemovietickets

BuyanyfullpricemovieticketonTuesdayorWednesday,andyoucanbuyasecondticketfora

friendonlyhalfprice.Thelatestmoviesareallfree.TheofferendsonNovember16.

31.Ifyouspend$I()0ormoreintheshop,.A.youcangetashirtfreeB.somefreestamps

willbegiventoyou

C.afreebookwillbelongtoyouD.youcanparkyourcarfor6hoursforfree

32.Ifyouwanttohaveafreesoftdrink,youcangoto.

A.Mike'sCafeB.DanielMen'sWearC.theBookStoreD.JBMusicStore

33.Ifyoucanbuyasecondmevieticketforonly$20,thefullpriceticketis.

A.$10B.$25C.$30D.$40

34.ThefollowingcouponsareavailableonNovember15EXCEPT.

A.10%offB.FreesoftdrinkC.HalfpricemovieticketsD.Buyone.getonefree

35.Fromthispassagewccanlearn.

A.onepersoncanbuy4ticketsforthepriceoftwo

B.ifyoubuyabookthere,youmaypaylessthanhalftheprice

C.youcangetanotheronefreeifyoubuyashirtoratie

D.youwon'tgetafreesoftdrinkunlessyouspendmorethanIDdollarsonthemeal

（2022?廣東?三模）Imaginethis.There'sanappleandapieceofcakeonatable.Whichonewould

youlike?Thedeliciouscakeorthehealthyapple?Abestseller,Willpower.RediscoveringOurGreatest

Strength,suggeststhatwillpower（意志力）istheabilitytomakedecisionsthatarebetterforusinthelong

term,ratherthanintheshortterm.

Hereisafamousexperimentinthebook:TheMarshmallowTest.In1972,ProfessorWalterMischel

testedthewillpowerof600four-year-oldstosix-year-olds.Intheexperiment,eachchildwasleftaloneina

roomfbrfifteenminuteswithamarshmallow（棉花軟糖）onatableinfrontofthem.Theyweregiventwo

choices:theycouldeithereatitor,iftheywaitedfifteenminutes,they'dbegivenasecondone（andthen

theycouldeatboth）.

So,whatdidthekidsdo?Well,asyoucanimagine,70%atethefirstmarshmallowwithinthefifteen

minutes.Buttheother30%showedwillpower—theycontrolledthemselvesandwaitedforthesecond

marshmallow.ButthenMischeldiscoveredsomethingreallyintcicsting.Twentyyearslatcr,hegotintouch

withthechildren,who,bythen,wereintheirearlytwenties.Andhefoundthatthosewho'dshownstrong

willpowerweregettingbettermarksatuniversityandweremorepopular.

Willpowerislikeamuscle0UI肉），andthemoreyouexerciseit,thestrongeritgets.So,ifyoudodaily

t4sel^conlrolexercises"，suchasmakingyourbedorbrushingyourteeth,you'llimproveyouroverall

willpower.Anddailywillpowerexerciseswillhelpyouwiththosebiggergoals,suchasstudyingforanexam

ortrainingforamarathon.

Becarefulthough.Justlikeanymuscle,your“willpowermuscle“cangettired.Ifyou'vehadtodolots

ofthingsthatrequirewillpower,:akeabreakorgiveyourselfatreat.Thatway,you'llbuildupyourwillpower

again.

Andonelastthing,thewritermentionspeoplewholearnforeignlanguagesusuallyhavealotof

willpower.So,congratulations!

36.HowmanychildrengotIwomarshmallowsin（heMarshmallowTestin1972?

A.180.B.240.C.420.D.600.

37.InParagraphs2&3,thefair.ousexperimentexplains.

A.morekidshavestrongerwillpowerB.willpowerinfluencespeople'slivesgreatly

C.howpeoplepracticechildren'swillpowerD.marshmallowscanhelpimprovewillpower

38.Thewriterprobablyagreesthat.

A.allthelanguagelearnershavestrongerwillpower

B.willpowercan'tbeimprovedbydoingsomedailythings

C.youngkidsdon'tneedtopracticewillpowerlikegrown-ups

D.peoplewithstrongwillpowercanachievetheirgoalsmoreeasily

39.Accordingtothepassage,peoplewhomighthavestrongwillpower.

A.doregularpianopracticeevsrydayB.giveupmorningrunninghalfway

C.eatasmuchjunkfoodastheylikeD.usuallygetuplateonthecoldmorning

40.Thispassageismostprobablyfrom.

A.afoodmagazineB.anexperimentreportC.asciencemagazineD.

sportsreport

bayof'wind神奇的自制“風(fēng)軟”<>

Youcanmovemoreairthanyoumight

thinkjustbyblowingwithyourlungs（肺）.

bagandtape《用膠帶粘）it

closed.Leaveopenasmall

holeforclotheshangerto

gothrough.

Askhelpertoholdbottomofbagandsee

ifyoucanblowthroughthesmallhole

andfillthebagfullofairwithonebreath.

Pressair

""outofbag.

Askhelpertohold

bottomofbagagain,

andblowairinto

thesmallholewhile

keepingmouthabout

25cmfromthehole.

MTHathapp?n9dl?

Thesecondtime,youwereabletoblowa

largeamountofairintothebag.

Thestreamofairn

流）youblewintothebag

thesecondtimecreateda

partialvacuum（半■空）as

itenteredthebag.

Thatpulledin（拽入）alotofsurroundingair

withit.fillingupthebag.

（2022?江蘇?泰州中學(xué)附屬初中三模）

41.Theexperimentshows.

A.howtoholdourbreathforalongertimeB.howtomovemoreair

C.thetheoryofvacuumsD.howourlungswork

42.Whatdoweneedtomakeabagofwind?

A.Tape,aclotheshangerandasmallplasticbag.

B.Tape,aclotheshangerandalargeplasticbag.

C.Tape,ahelperandalargeplasticdrycleaner'sbag.

D.Tape,aclotheshangerandlargeplasticdrycleaner'sbag.

43.Toblowmoreairintothewindbag,weneedto.

A.blowcloselytotheholeB.blow25cmawayfromthehole

C.blow25secondsintotheholdD.blowwithonelongbreath

44.Morcairwentintothewindbagthesecondtimebecause.

A.airwentintothebagbyitselfwhilenoairwasinit

B.thepeoplewhoblowheldalongerbreath

C.surroundingairwaspulledinthebagwhileblowing

D.airinsidethebagwasblownoutofthebag

45.Whocanblowmoreairintothebag?

（2022?山東聊城?二模）Istheworldtoocrowded?Well,that'sahardquestiontoanswer.Itsamatter

oftheperspective（視角）.InMontana,youmightdriveamileinanydirectionandmightnotseeanother

humanbeing.InMacao,60,0（X）peopleliveineverysquaremile!

Whatistrueisthattheworld'spopulationdoesn'tstaythesame.Ithasbeenincreasingfast.That'sinpart

becauseineachgeneration（代）,therearcmorepeoplewhothenhavechildrenthanthelastgeneration.

Fivehundredyearsago,thepopulationoftheworldwasabout460million.In1900,theworld'spopulation

wasunder2billion（十億）.Rightnowitisdoublingevery40years.Thatmeans,ifthisrateofgrowth

continues,whenyouarcaparent,therewillbetwiceasmanypeopleonearthastherearcnow.Soonthe

world'spopulationwillprobablyreach8billion.

Somepeopleworryaboutthat!Butther