2024-2025学年广东省某中学七年级英语下册Unit3单词综合测试卷

广州中学初一下学期英语Unit3综合卷

第一部分语法选择（共15小题；每小题1分，满分15分）

Treesareimportant.Theycanprovideanimals^_homes.Lotsof

things,likepaperandpencils,aremade^—trees.However,theycangivej

theseonlyiftheyarealive.Theymustbetakengoodcareoftokeep4.

Therefore,peoplespendmuchtimeandmoney5trees.Itisfoundthatthetree

wouldgrowbestinaclimatewith6sunlightandrainfall,andlittlesunlight

orrainfallwould7_thegrowthofatree.Thechangefromafavorabletoan

unfavorableclimate_8bedecidedbyreadingthepatternofringsinatreetrunk.

Youshouldcounttheringsofatreetrunk9theoutsidetotheinside.If10

tenthringisfarfromtheotherrings,thenitiscertainthatthereislotsofsunlight

andrainfall.IftheringsareHtoeachother,thentheclimateisbad.Study

likethisisnotonlyforthehistoryofweather,12forthehistoryofhuman

beings.YoucanfindonlysandnowinoneplaceofNewMexico.However,there

were13_peoplewhousedtolivethere.They14suddenly.Why?Agroup

ofscientistsstudiedpatternsofdeadtreeringswhichoncegrewthere,andthey

foundthatpeoplewentawaybecausetheyhaddestroyedallthetrees15_and

buildhouses.

l.A.toB.withC.inD.of

2.A.inB.fromC.outD.with

3.A.ourB.oursC.weD.us

4.A.healthilyB.unhealthyC.healthyD.health

5.A.studyB.tostudyC.onstudyingD.studying

6.A.manyB.fewC.afewD.plentyof

7.A.tostopB.stoppedC.stoppingD.stop

8.A.shouldB.mnustC.wouldD.can

9.A.fromB.betweenC.sinceD.as

lO.A.anB.theC./D.a

ll.A.close-.B.closingC.closedD.closely

12.A.soB.andC.butalsoD.or

13.A.millionsB.millionofC.millionD.millionsof

14.A.areleavingB.leaveC.willleaveD.left

15.A.burningB.burnC.tobumD.toburning

第二部分完形填空（共10小题；每小题1分，满分10分）

Plantsgroweverywhere.Fromthetiniest（最小的）flowerinacrack（缝隙）ofthesidewalk

tothetoweringtrees（参天大树）inadeepforest,plantsplayahugerolesofthings,

inourlives.Mostplantsgrowbestinspringandsummer16_theweatheris3these

warmandthereisalotof17Itislikealife-givingdrinkforplants.WhenTheretore,

autumncomes,plantsgrow18.Somemayevendiebeforewinter19.Inwouldgrow

autumn,their20turnyellowandfalloff.Withnoleaves,plantsloselessinfallwould

21.dimatc8initheringsfarfromthetheringsarerthehistorysandnowinusedtolive

erasofdeadbecausetheyEachplanthasitsounhabitat（生?舌环境）.They22acertain

temperature,sunlightandhumiditylevel（湿度）.Whentheirhabitatisdestroyed.they

23die.Nowadays,humanactivitiescausemuchpollution.Thisis24_tothegrowth

ofplants.Forexample,thegreenhouseeffect（温室效应）andacidrain（酸雨）are

destroyingtheAmazonForest.Lotsofplantshavedied.Theextinction（灭绝）ofmanyplants

istellingusto25againstpollution.

16.A.ifB.becauseC.whenD.until

17.A.windB.snowC.cloudD.rain

18.A.tallerB.shorterC.fasterD.slower

19.A.comesB.goesC.missesD.returns

20.A.rootsB.trunksC.leavesD.fruit

21.A.airB.wvaterC.foodD.drink

22.A.giveB.provideC.needD.get

23.A.mustB.shouldC.havetOD.may

24.A.harmfulB.helpfulC.cheerfulD.successful

25.A.discussB.leadC.fightD.produce

第三部分阅读

第一节阅读理解（共15小题；每小题2分，满分30分）

（A）

Withoutwater,plantswoulddie.Howdoeswatergetfromtherootsofaplanttotheother

partsoftheplant?Thewatertravelsthrough"smallpipes"toallpartsoftheplant.Andhereis

ascientificexperimenttoshowit.

Whatweneed:

*acelerystickwithleaves

*aknife

*someredfoodcolourfromtomatoes

*aglassofwater

Howwedoit:

l.Putafewdropsoftheredfoodcolourintheglassofwater.

2.Cutthebottomofthecelerystickandplacetheceleryinthewater.

3.Leavethecelery（芹菜）stickintheglassofwaterforafewhours.

4.Takethecelerystickoutofwaterandcutitintopiecesacrossthestern.

Whathappens:

Youcanseeredfoodcolourinallcrosspartsfromthebottomofthecelerystick

rightuptotheleaves.

Whyithappens:

Thewater,withtheredfoodcolour,hasruninthecelerystickthroughthesmall

pipesinit.Theexperiment,therefore,showsthatthesmallpipesintheplantallow

watertoreachallpartsofit.Theredfoodcolourshowswherethewaterhas

travelledintheceierystick.

26.Whichshowsthecorrectorderoftheexperiment?

A.①-③-②-④B.③一①一②一④

C.①一③-④-②D.③一①一④一②

27.Accordingtotheexperiment,whatcanyouseeaftercuttingthecelerystickinto

crossparts?

A.Theinsideofthecelerystickhasnothing

B.Thewaterinthecelerystickisrunning.

C.Theeelerystickisbiggerandtaller.

D.Allthecrosspartsarered.

28.Whatistheaim（目的）oftheexperiment?

A.Totellusplantswoulddiewithoutwater.

B.Totellusthewaywaterrunsthroughaplant

C.Toshowdoingascienceexperimentonplantsiseasy.

D.Toshowhowtomakecolorfulleavesbycoloringthewater.

（B）

Alllivingthingsneedenergytoliveandgrow.Thisenergycomesfirstfromthesun

Plantsusewaterandsunlighttomaketheirownfood.Animalscannotmaketheirownfood,

andtheyeatplants.Otheranimalsthencattheplanteaters.

Afoodchain（食物链）showswhateatswhat.Itmightshowthatzebraseatgrass

andthenlionscatzebras.Lionsalsoeatotheranimals.Zebraseatotherkindsofplants.Soit

takesmorethanonefoodchaintoshowhowlionsandzebrasgettheirenergy.

Afoodwebshowshowfoodchainsworktogether.Fromitwecanseehowenergy

movesfromplantstoanimals.Plantsandanimalsthatliveinhot,drydeserts（沙漠）

dependon（依靠）wateraswellasfood.Creosotebushes（煤焦油灌木）havesmallleaves

thatholdwater.Theirseedsprovidefoodandwaterforkangaroorals.hangarooratsdon't

needtodrinkwater.Theygetallthewatertheyneedtromtheplantstheyeat.Kangaroorats

keepcoolbycomingoutonlyatnighttolookforfood.Ringtailcats（环尾猫）alsocome

outonlyatnight.RingtailcatshuntandeatkangarooTats.Coyotes（焦3良）eatboththe

kangarooratsandtheringtailcats.

Nothingiswasted（浪费）inafoodweb.Vultureseatdeadanimals.Vulture（秃鹫）

arescavengers（食腐动物）.Scavengersdonotbuntandkillotheranimalstogetfood.They

eatanimalsthatarealreadydead.Whenaringtailcatoracoyotedies,itmakesamealforthe

vultures.Scavengersdoanimportantjobinkeepingthesurroundings（环境）clean.

29.Wheredoestheenergythatlivingthingsneedfirstcomefrom?

A.Animals.B.Plants.C.Thesun.D.PlanteateTS.

30.Whydoringtailcatscomeoutonlyatnight?

A.Becausetheyareafraidofcoyotes.B.Becausetheyareshyanimals.

C.BecauseitisveryhotinthedaytimeD.Becausetheycaneatknngaronrats.

（C）

Overthelast20years,Chinahasputalotofeffortintoprotectingwetlands.Allthathard

workhaspaidoff.Theworld'sfirstinternationalmangrove（红树林）centerwassetupin

Shenzhen.Whydomangrovesmatter?AndwhydidShenzhenstandout?

Mangrovesplayanimportantroleintheworld.Theytakeincarbondioxide（二氧化碳）

fromtheairandthenstoreitforthousandsofyears.Studiesshowthattheycanholdfivetimes

morecarbonthanrainforest.Peopleoftencallmangroves"coastguards".Asglobalwarming

raisessealevels,thesetreescouldhelpprotectcoastalcitiesfromflooding.What'smore,

mangrovesarehometodifferentkindsofanimals.

Mangrovescoveranareaofabout14.8millionhectares（公顷）worldwide.However,

they'redisappearingfrommanyplaces.Chinaisoneofthefewcountrieswheremangrove

areasaregrowing.Theirtotalareahasrisenfrom22,000hectaresin2001to29,200hectares

today.Shenzhenishometo296.18hectaresofmangrovesandhasputinalotofeffortto

protectthem.Thishashelpedbringback43.33hectaresofmangroves.TakeFutianMangrove

EcologicalPark,forexample,wherenearly100,000birdsrestinthewinter.Amongthem,there

aremorethan20rareorendangeredspecies.

“BuildingtheShenzhencenterisimportant/1saidaChineseofficial,nItservesasaplace

forChinatoworkwithothercountriestoprotectmangroves/Shenzhenisn'tgoingtostop

there,however.Itplanstobuilditselfintoaninternationalwetlandcityby2035.Bythen,half

ofitswetlandswillbeprotected.Let'shopeforabetterfuture.

33.Whymangrovesarecalled"coastguards"?

A.Theyprovidefoodfbrcoastalcommunities.

B.Theyprotectcoastalcitiesfromfloodingandstorms.

C.Theytakeincarbondioxide（二氧化碳）fromtheair

34.Whatcanweknowfromthepassage?

A.Mangrovescanpreventallnaturaldisasters.

B.ThetotalareaofmangrovesinChinais22,000hectares.

C.Rainforestcanstoremorecarbonthanmangroves.

D.Shenzhenhassuccessfullyrestored43.33hectaresofmangroves.

35.WhatisrightaboutFutianMangroveEcologicalPark?

A.Itisthelargestmangroveareaintheworld.

B.Itishometonearly100,000birds,includingrareandendangeredspecies.

C.ItistheonlymangroveareainShenzhen.

D.Itisusedforcommercialpurposes.

36.WhatisShenzhen'splanforwetlandsby2035?

A.Tobecometheworld*slargestmangrovecenter.

B.Toprotecthalfofitswetlands.

C.Toincreasethenumberofrarebirdspecies.

D.Toreducecarbonemissionsby50%.

（D）

Doyoulikeblueberries（蓝莓）?Ifso,thenexttimeyou'teabouttoeatyourfillfthese

deliciousberries,takeagoodlookatthem.Thenaskyourself:Arelueberriesreallyblue?

Forthemostpart,blueberriesarenftblue.Ifyoucarefullypeel（录I］掉）theskinIfone,you'

11seethattheflesh（果肉）insideiswhite.Ifyourubtheinsideofeskinonawhitepieceofpaper,you'll

seeareddish-purplecolor.Andifougentlyrub（擦）theoutsideofablueberry,thebluecolor

disappearsandtheerrylooksalmostblack.Butthemomentyoupickone,itdoeslookblue.

What'sgoingon?Well,therearetwowaystocreatecolors.Thefirstisthroughigments（色素）.Pigments

showthecolorofthelighttheydon'ttakein.Themostommonpigmentinplantsischlorophyll（叶

绿素）,agreenpigment.Plantleavesppeargreenbecausechlorophylldoesn'ttakeingreenlight.It

sendsitoutinsteadhiletakinginblueandredlight.Plantsprefertotakeinbluelightbecauseithasore

energythananyotherlight.Infact,therearen'tany"trueblue"igmentsintheplantworld.

Thesecondwaytomakecoloristhroughstructuralcolor.Thishappenswhentheructureofasurface

makessomecolorsoflightlookdifferent.HaveyoueverseenherainbowcolorsonaCD?Thesecolors

showupbecauseofthetinyspacesbetwenthedisk'sthinlayers（层）.Thesespacesonlyallowcertain

colorstoreachoureyes.Blueberriesalsocreatestructuralcolorintheirownway.Theberrieslookblack

whentheyareripe（成熟的），buttheplantsbuildathinlayerofwax（蜡）ontheiroutside.

Thislayergivestheberriestheirbluelook.Thebluecolorbenefitstheplantsbecausebirdsare

attractedtotherarecolor.Theyeattheberriesandspreadtheseedsfarandwide.Nowyourbowlof

blueberriessuddenlylooksalotmoreinteresting.Thefruitisbeautiful,butitsbeautyisonlyskindeep!

37.Theauthorwrotethisarticlemainlytoexplain

6

A.whyblueberriesappearblue

B.howblueberriesgottheirname

C.whyblueisrareintheplantworld

D.howblueberriesspreadtheirseeds

38.Accordingtothearticle,blueberriesappearbluebecauseof

A.aspecialbluepigment

B.alayerofwaxontheiroutside

C.aspecialchemicalintheirflesh

D.ashortageofchlorophyllontheirleaves

39.Blueberriesappearblueinthesamewaythat

A.aCDappearscolorful

B.atreeleafappearsgreen

C.theyappearblackwhenripe

D.afallenleafappearsyellow

40.Whatbenefitdoesthebluecolorofblueberriesprovidetotheplant?

A.Itprotectstheplantfrominsects.

B.Itmakesthefruitstandoutatthemarket.

C.Itattractsbirdstohelpspreadtheseeds.

D.Ithelpstheplantsurviveonawarmingplanet.

第二节阅读填空（共5小题，每题1分，共5分）

Theearthisabout4,600millionyearsold.Humanbeingshavelivedontheearthforonly35,000

years,butduringthisperiodwehavechangedourplanetalotinmanyways.41

Allovertheworld,peoplehavecutdownmillionsoftrees,somoreandmorekindsofanimalsand

plantsaredisappearing.Inbigcities,carsandbuseshavepollutedtheair.Factorieshavealsopolluted

thelandandthewater.

42Itisimportanttotheearth.Butnowairpollutionisdestroyingitandthathasmadeaverybig

holeintheozonelayer（臭氧层）.43Carbondioxide（CO2）intheairhasincreasedalot.44

Ithasformeda”blanket（毛毯）”aroundtheearth.45・Thismakesourearthbecome

warmerandwarmer.Therefore,thiscausestheleveloftheoceantorise.

Alltheseproblemsareveryserious.Wemustdosomethingtostopourearthfrombeingpolluted.

A.Theheatfromthesuncan'tescape,sothetemperatureisrising.

B.Toomuchharmfullightfromthesunpassesthroughitandreachestheearthdirectly.

C.Somethingswe'vedoneareverygoodfortheearthwhilesomearebad.

D.Aroundtheearth,there*saspecialkindofoxygencalleda4ozonen.

E.Itmainlycomesfromdifferentkindsofburningmaterials.

6

第四部分写作（共三节，满分30分）

第一节语篇填词（共5小题；每小题1分，满分5分）

阅读短文，根据上下文和所给首字母写出所缺单词。注意使用正确形式，每空限填一词。答卷

时，要求写出完整单词。

Treesarewonderfulgiftsfromnature.Theyhavemany46.breachingoutlikefriendlyarms.

Inspring,they47