do you know why so many animals do not stay in one place-答案（2014年达州中考）阅读理解b

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1、Doyouknowwhysomanyanimalsdonotstayinoneplace?答案（2014年达州中考）阅读理解B　　（2014达州）阅读理解B　　Doyouknowwhysomanyanimalsdonotstayinoneplace?Birds,fishandotheranimalsmovefromoneplacetoanotherplaceatacertaintime.Theymovefordifferentreasons:mostofthemmovetofindfoodmoreeasily,butothersmovetogetawayfrom

2、placesthataretoocrowded.　　Whencoldweathercomes,manybirdsmovetowarmerplacestofindfood.Somefishesgivebirthinwarmwaterandmovetocoldwatertofeed.Themostfamousmigrationisprobablythemigrationoffish,whichiscalled“salmon”(鲑鱼).Thisfishisborninfreshwaterbutittravelsmanymilestosaltwater.Thereits

3、pendsitslife.Whenitisold,itwillreturntoitsbirthplaceinfreshwater.Thenitgivesbirthanddies.InnorthernEurope,thereisakindofmouse.Theyleavetheirmountainhomeswhentheybecometoocrowded.Theymovedowntothelowland.Sometimestheymoveallthewaytotheseaside,andmanyofthemarekilledwhentheyfallintothes

4、ea.　　Recently,scientistshavestudiedthemigrationofakindoflobster(龙虾).Everyyear,whentheseasonofthebadweatherarrives,thelobstersgetintoalonglineandstarttowalkacrosstheflooroftheocean.Nobodyknowswhytheydothis,andnobodyknowswheretheygo.So,sometimesweknowwhyhumansandanimalsmovefromoneplace

5、toanotherplace,butatothertimeswedon’t.Maybelivingthingsjustliketotravel.　　55.Thereasonformostoftheanimalstomoveis________.　　A.togetawayfromun-crowdedplacesB.tofindtheirownparents　　C.towanttokillthemselvesD.tofindfoodmoreeasily　　56.Wheredoesyoungsalmon(鲑鱼)spenditslife?　　A.Infreshwater

6、.B.Insaltwater.　　C.Inmountainhomes.D.Initsbirthplace.　　57.Whendothelobsters(龙虾)begintomoveanotherplace?　　A.Whentheirhomesbecometoocrowded.　　B.Whentheseasonofthebadweatherarrives.　　C.Whentheywanttogivebirth.　　D.Whentheirfoodiseatenup.　　58.Theunderlinedwordmigrationinthepassagemeans___

7、_____.　　A.迁徙B.习性C.运动D.寻觅　　阅读B55-58DBBA