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课后限时作业(六)限时/50分钟Ⅰ.阅读理解KoalasarepicturedeverywhereinAustralia—oncleaningproducts,onboxesofchocolate,onsportsteamshirts.Yettheanimalsliveonlyinpocketsalongtheeastcoast.Theyonceinhabitedtheentirecoastline.Thekoalapopulationdroppedafterfarmerscutdownmanyoftheforestswherekoalaslived,andhunterskilledtheanimalsfortheirfur.Bytheearly1900s,“koalaswerebasicallyshotoutofsouthAustralia，”saysecologistBillEllis,whostudiestherelationshipsamonglivingthingsandtheirenvironments.IrecentlyjoinedEllisandhisteaminaforestonStBeesIsland,19milesoffthenortheasterncoastofAustralia,witheightothervolunteers.Theislandisanaturallaboratory，yieldingfindingsthatmayhelpprotectkoalaselsewhereonthecontinent.Thevolunteerssearchedtheislandforkoalasinthebluegumtrees.Whenwefoundakoala,wegatheredinformationaboutthetreesinthearea.Bluegumisaspeciesoftheeucalyptustree(桉树)inwhichthefunnyleafeatersspendmostoftheirtime.EucalyptustreesarenativetoAustralia,andtheirleavesarethemainfoodsourceforkoalas.Althoughkoalascanwalkontheground,theyarebettersuitedforlifeinthecanopy,thehighcoverofbranchesandleavesinaforest.WhathasEllis'researchtoldhimsofar？ThepopulationofStBeesseemstobehealthy.YetElliswonderswhetherthekoalasmightbeheadingforhardtimes.Theislandisoverrunwithwildgoats,andEllisthinksthegoatsareeatingthesmallbluegumtrees.Withoutthosetrees,thekoalaswillrunoutoffoodinthefuture.Ellishopesmoreresearchwillhelphimunderstandhowtoprotectthebluegumtrees—andthekoalasthatdependonthem.“Ithinkthat'swhateveryoneistryingtodo—tomakeadifference，”Ellissays.语篇导读本文为说明文。在澳大利亚，考拉的生存环境受到了各方面的影响，我们到底应该为它们的生存做些什么呢？1．Whatcanweknowfromthefirstparagraph?A．Koalas'picturescanbefoundeverywhereintheworld.B．KoalasinAustralialiketoeatchocolate.C．KoalasliveonlyintheeastcoastofAustralia.D．YoucanbuythepicturesofkoalasonlyintheeastcoastofAustralia.解析C细节理解题。根据第一段最后一句可知，考拉只生活在澳大利亚的东海岸，故选C项。2．What'stheworkofthevolunteersinEllis'team?A．Tocollectinformationaboutthetreesthatkoalasdependon.B．Topreventfarmersfromcuttingdowntheforest.C．Tosavethekoalasinjuredbylocalhunters.D．Tostudythelivingthingsandtheenvironmentintheforest.解析A细节理解题。根据第五段可知，Ellis的团队志愿者的工作是收集考拉赖以生存的树的信息，故选A项。3．WhatwillEllismostprobablystarttodonext?A．TokeepthepopulationofStBeeshealthy.B．Tokillallthegoatsontheisland.C．Tofindsomenewfoodsforgoats.D．Toprotectbluegumtreesforkoalas.解析D推理判断题。根据最后一段可知，Ellis接下来会保护蓝桉树，故选D项。4．What'sthepurposeofwritingthispassage?A．Tocallforpeopletoconcernaboutthelifeofkoalas.B．TorecordtriptoAustraliaforwatchingkoalas.C．Topresentsomebasicknowledgeofkoala'slife.D．TointroducetheecosystemofwildlifeinAustralia.解析A写作意图题。本文主要介绍了考拉在澳大利亚的生存状况，目的是呼吁人们关注考拉的生存，故选A项。Ⅱ.完形填空LatelyIhadstartedtoquestionwhyIstillwouldreadilyhelpsomeone,sincerecentlymyattemptsatgenerosityusuallyturnedaroundtoenduphurtingme.Lastweek,whenIwassittingatthestation,awomanaskedmeifIhadsome__1__thatshecouldhaveforaticket.Without__2__，Ireachedformy__3__andfishedouta5bill.WhenIheardher__4__growl(发咕噜声),IlookedatahamburgerwhichIhadgottenearlierandgaveboththemoneyand__5__toherwithasmile.WhenIdid,Iwasabletogeta__6__lookather.Itseemedthatshewasnotgoingthroughj...