中考阅读理解练习之缤纷自然篇附答案Word文件下载.docx
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中考阅读理解练习之缤纷自然篇附答案Word文件下载.docx
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mostofthemmovetofindfoodmoreeasily,butothersmovetogetawayfromplacesthataretoocrowded.
Whencoldweathercomes,manybirdsmovetowarmerplacestofindfood.Somefishesgivebirthinwarmwaterandmovetocoldwatertofeed.Themostfamousmigration(迁移)isprobablythemigrationoffish,whichiscalled“salmon”.Thisfishisborninfreshwaterbutittravelsmanymilestosaltwater.Thereitspendsitslife.Whenitisold,itreturnstoitsbirthplaceinfreshwater.Thenitgivesbirthanddies.InnorthernEurope,thereisakindofmouse.Theyleavetheirmountainhomeswhentheybecometoocrowded.Theymovedowntothelowland.Sometimestheymoveallthewaytotheseaside,andmanyofthemarekilledwhentheyfallintothesea.
Recently(近来),scientistshavestudiedthemigrationofakindoflobster(龙虾).Everyyear,
whentheseasonofthebadweatherarrives,thelobstersgetintoalonglineandstarttowalk
acrosstheflooroftheocean.Nobodyknowswhytheydothis,andnobodyknowswheretheygo.
So,sometimesweknowwhyhumansandanimalsmovefromoneplacetoanother,butatother
timeswedon’t.Maybelivingthingsjustliketotravel.
1.Mostanimalsmovefromoneplacetoanotheratacertaintimeto_______.
A.givebirthB.enjoywarmerweather
C.findfoodmoreeasilyD.findbeautifulplaces
2.Thefishcalled“salmon”spendsalongtimein______.
A.saltwaterB.riversC.freshwaterD.itsbirthplace
3.ThemiceinnorthernEuropemovewhen_______.
A.theygivebirthB.theplacegetstoocrowded
C.theweatherisbadD.theyhaven’tenoughfood
4.Thelobstersmove________.
A.tothefreshwaterB.atacertaintimeC.totheunderseaD.tofindmorefood
5.Whatisthemainideaofthepassage?
A.Animalsmovetofindfoodmoreeasily.
B.Themigrationofthefishcalled“salmon”isthemostfamousmigration.
C.Livingthingsmovefromoneplacetoanotherbecausetheyliketotravel.
D.Sometimesweknowwhyandhowlivingthingsmovefromoneplacetoanother,butsometimeswedon’t.
Passage2
Ifyoulookattheskyonenightandseesomethingmovingandshiningthatyouhaveneverseenbefore,itmightbeacomet(彗星).
Acometsometimeslookslikeastar.Likeaplanet,acomethasnolightofitsown.Itshinesfromthesunlightitreflects(反射).Liketheearth,acometgoesroundthesun,butonamuchlongerpath(轨道)thantheearthtravels.
Ifacometisn’tastar,whatisitthen?
Somescientiststhinkthatalargepartofacometiswaterfrozenintopiecesoficeandmixedwithironandrockdustandperhapsafewbigpiecesofrock.Whensunshinemelts(融化)theiceinthecomet,greatcloudsofgasgotrailingafterit.Theseclouds,togetherwiththedust,formalongtail.
Manypeopleperhapshaveseenacomet.Howevernooneknowshowmanycometsthereare.Theremaybemillionsofcomets,butonlyafewcomecloseenoughforustosee.
AnEnglishmannamedEdmundHalley,wholivedfrom1656to1742,foundoutalotaboutthepathsthatcometstakethroughthesky.Somecometsmoveoutofoursightandnevercomeback.Otherskeepcomingbackatregulartimes.AbigcometthatkeepscomingbackwasnamedafterHalleybecausehewastheonewhoworkedoutwhenitwouldcomebackagain.MaybeyouhaveeverseenHalley’sCometsbecausethelasttimeitcameclosetothesunandtheearthwasintheyear1986.Thenpeopleallovertheworldwereoutsideatnighttolookatit.YouwillprobablybeabletoseeHalley’sCometswhenitcomesneartheearthagain.
1.Acometislike________.
A.sunB.moonC.sunlightD.theearth
2.Alargepartofacometis______.
A.waterandrockB.waterfrozenintopiecesoficeandmixedwithiron
C.ice,ironandrockdustD.onlyafewbigpiecesofrock
3.Maybemanypeople_______.
A.haven’tseenanycometsB.haveseenallcomets
C.haveseenacometatdaytimeD.haveseenacomet
4.Somecometskeepcomingback________.
A.atanytimeB.atnoonC.atregulartimesD.atdaytime
5.Halley’sCometscameback_____.
A.in1990B.in1980C.in1986D.in1989
Passage3
Doyouknowsomethingabouttreerings(年轮)?
Doyouknowtheycantelluswhattheweatherwaslike,sometimesevenhundredsofyearsago?
Atreewillgrowwellinaclimate(气候)withlotsofsunshineandrainfall.Andlittlesunshineorrainfallwilllimit(限制)thegrowthofclimatebystudyingthetreerings.Forexample,tofindouttheweatheroftenyearsago,counttheringsofatreefromtheoutsidetotheinside.Ifthetenthringisfarfromtheeleventhring,thenwe’resurethatitwassunnyandrainymostofthatyear.Ifitisneartotheeleventhring,thentheclimatethatyearwasbad.
Treeringsareimportantnotonlyforstudyingthehistoryofweatherbutalsoforstudyingthehistoryofman.ManycenturiesagotherelivedalotofpeopleataplaceinNewMexico.Butnowyoucanfindonlysandthere—notreesandnopeople.Whathappened?
Ascientiststudiedtheringsofdeadtreesthere.Hefoundthatthepeoplehadtoleavebecausetheyhadcutdownallthetreestomakefiresandbuildings.Asallthetreeshadgone,thepeopletherehadtomove.
1._____ingoodclimate.
A.TreeringsgrowfarfromeachotherB.Treeringsbecomethinner
C.Treesdon’tneedsunshineorrainfallD.Peoplecancutdownmostofthetrees
2.Thescientistsareinterestedinstudyingtreeringsbecausetreeringscantell______.
A.whetheratreewasstrongornotB.whetherpeopletookgoodcareofthetreesornot
C.whethertheclimatewasgoodornotD.howoldthetreeswere
3.Ifyouwanttofindouttheweatheroftwentyyearsago,youshouldstudy_______.
A.thetwentiethringB.thetenthring
C.thenineteenthringD.thetwenty-firstring
4.Whydidpeopleusuallyliveinplaceswithlotsoftrees?
A.Treescouldtellthechangeoftheweather
B.Treesbroughtlotsofsunshineandrain
C.Treescouldmakeweathernottoohotortoocold
D.Treescouldbeusedforburningandforbuildinghouse
5.ThepeoplehadtoleavetheplaceinNewMexicobecause_______.
A.hadweatherstoppedthegrowthoftrees
B.theynolongerhadwaterandthelandbecamesand
C.theydidn’thaveenoughtreesforburning
D.therewastoomuchrainthere
Passage4
Allourfoodcomesfromthesoil(土壤).Someofuseatmeat,butanimalsliveonplants.Ifthesewerenoplants,weshouldhavenoanimalsandmeat.Sothesoilisnecessaryforlife.
Thetopofgroundisusuallycoveredwithgrassorotherplants.Plantsgrowinsoil,whichhasadarkcolor.Thisdarksoilishumus,deadleaves,deadplantsandanimalwastemakeit,butthistakesalongtime.Whenthehumushasbeenmade,plantscangrowwellinit.
Allsoilneedsfood.Ifwedon’tgiveitany,theplantswillbeweak.Animalswasteisthebestfoodforthesoil,butchemicalfertilizers(化肥)arealsoveryuseful.Thesamecropshouldnotbegrowninthesameplaceeveryyear;
itisbettertohaveadifferentcrop.Achangeofcropandtheuseofagoodfertilizerwillkeepthelandingoodcondition.
Whenthesoilisdry,thewindblowsitaway.Sometimesheavyraincarriesthehumusdowntoariver.Peopleshouldgrowmoreandmoretreesandgrasstostopwindfromcarryingthehumusaway.Ittakeshundredsofyearstomakehumus,andsowemustsaveeverybitofit.Withoutsoil,wherecanwegrowfood?
1.Fromthetext,weknowpeopleliveon_______.
A.animalB.plantC.meatD.soil
2.Theword“humus”means_____inChinese.
A.微生物B.土壤C.腐殖土D.粘土
3.Weshould_______tokeepthesoil.
A.givemorefertilizersB.killmoreanimals
C.makemorehumusD.growmoretreesandgrass
4.Weshouldsaveeverybitofhumus,because______.
A.ittakesalongtimetomakehumus
B.themorehumusinthesoil,thebetterplantsgrow
C.thechemicalfertilizersareexpensive
D.AandB
5.Thebesttitleofthistextshouldbe______.
A.Soilisnecessarytopeople
B.Thesamecropcan’tbegrowninthesameplaceeveryyear
C.Soil’sfoodischemicalfertilizers
D.Humusishardtomake
Passage5
Intheseatherearemanyislands.Initswarmwaterstherearesomelittleones.Wecallthem“coralIslands”.
Acoralislandisverynicetolookat.Itlookslikearingofland(一圈陆地)withtrees,grass,andflowersonit.Onepartoftheringisopentothewater.Thereisalittleroundlakeinsidetheisland.
Ifyoulookintothislake,youwillseebeautifulcoral.Yousaythinktheyareflowers.Ifyoulookatapieceofcoral,youwillseemanylittleholesinit.Ineachoftheseholesaverysmallseaanimalhaslived.Theseseaanimalsmakethecoral.
Theybegantobuildunderthewater.Yearafteryear,thecoralgrewhigherandhigher.Atlastitgrewoutofthewater.
Thentheseabroughtitsmalltreesandsomethingelse.Aftersomeyears,thesethingschangedintoearth.Sometimesthewindbroughtseeds(种子)tothisearth.Sometimesbirdsflewoveritandbroughtseedstotheisland.
Thelittleseedsgrew.Inafewyearstherewereplantsallovertheisland.Inafewmoreyearsthereweretreesgrowingthere.
Soyousee,theseislandswerebuiltlittlebylittle.Theworkerswereverysmall.Dotheynotteachusalesson?
Canyouthi
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