托福听力TPO11原文Lecture1-智课教育旗下智课教育.pdf

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1、智课网托福备考资料托福听力TPO11原文Lecture1-智课教育旗下智课教育下面就让小编来为大家介绍一下托福听力TPO11原文中Lecture1的文本内容吧，大家要好好把握，这些都是非常有价值的材料，同时，大家也可以登录智课教育论坛进行TPO练习辅导，希望能够给准备托福听力的同学带来帮助。TPO11Lecture1Professor：Ok,todaywearegoingtocontinueourdiscussionoftheparentingbehaviorsofbirds.Andwearegoingtost

2、artbytalkingaboutwhatareknownasdistractiondisplays.Nowifyouwereabirdandtherewasapredatoraround.Whatareyougoingtodo?Well,foronethingyouaregoingtotrytoattractaslittleattentionaspossible,right?Becauseifthepredatordoesn’tknowyouarethere,itisnotgoingtotrytoeatyou

3、.Butsometimescertainspeciesofbirdsdotheexactoppositewhenthepredatorapproachestheydotheirbesttotrytoattracttheattentionofthatpredator.Nowwhywouldtheydothat?Well,theydothattodrawthepredatorawayfromtheirnests,awayfromtheireggsortheiryoungbirds.Andthebehaviorsth

4、atthebirdsengagingintodistractpredatorsarecalleddistractiondisplays.Andthereareanumberofdifferentkindsofdistractiondisplays.Mostofthetime,whenbirdsareengagingindistractiondisplacetheyaregoingtobepretendingeitherthattheyhaveinjuryorthatthey’reillorthatthey’re

5、exhausted.Youknowsomethingthat’llmakethepredatorthinksHum…hereisaneasymeal.Oneprettycommondistractiondisplaywascalledthebrokenwingdisplay.Andinabrokenwingdisplaythebirdspreadsanddragsthewingsoritstail,andwhileitdoesthat,itslowlymovesawayfromthenestssoitreall

6、ylookslikeabirdwithabrokenwing.Andthesebrokenwingdisplayscanbeprettyconvincing.Anotherversionofthiskindofdistractiondisplayiswherethebirdscreatesameimpressionofamouseorsomeothersmallanimalsthatrunningalongtheground.Agoodexampleofthatkindofdisplayiscreatedbya

7、birdcalledthepurplesandpiper.Nowwhat’sthepurplesandpiperdoesiswhenpredatorapproaches,itdragsitswingsbutnottogiveittheimpressionthatitswingsarebrokenbuttocreatetheillusionthatithasasecondpairoflegs.Andthenitraisesitsfeathers,soitlookslikeitgotacoatoffur.Andth

8、enitrunsalongthegroundswirlingleftandrightyouknowlikerunningaroundalittlerocksandsticks.Andasitgoesalongitmakesalittlesqueezingnoises.Sofromadistanceitreallylooksandsoundslikealittleanimalrunnin