2019-2020年高中英语第三册(全一册)Unit14Zoology-Period2Let’sread.doc

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1、2019-2020年高中英语第三册(全一册)Unit14Zoology-Period2Let’sreadGoals◆Talkaboutanimalsandanimalbehaviour◆Practisedebating◆Integrativelanguagepractice◆WriteanargumentativeessayPeriod2Let’sread!(THELANGUAGEOFHONEY-BEES)GoalsLearnaboutthemunicationofbeesLearnthewaysscientistsuse

2、todoresearchProceduresStep1:Discussinginpairs1.Howdopeoplemunicatewitheachother?ThewaypeopleusetomunicatewitheachotherSpokenlanguageWrittenlanguageFacialexpressionsHandgesturesPostureBodylanguage2.Howdoanimalsmunicate?Thewayanimalsusetomunicatewitheachothersoundss

3、mellmovementstouchwitheachotherfacialexpressionsbodylanguageposture3.HowmuchdoyouknowProfessorKarlvonFrisch,afamouszoologist?KarlvonFrischFrischisbestknownforhisstudiesofbees.In1919hedemonstratedthatbeescanbetrainedtodistinguishbetweenvarioustastesandodours.Hefoun

4、dthatwhiletheirsenseofsmellissimilartothatofhumans,theirsenseoftasteisnotashighlydeveloped.Healsoobservedthatitisnotlimitedtothequalityofsweetness.Hefoundthatbeesmunicatethedistanceanddirectionofafoodsupplytoothermembersofthecolonybytwotypesofrhythmicmovementsorda

5、nces:circlingandwagging.Thecirclingdanceindicatesthatfoodiswithin75m(about250feet)ofthehive,whilethewaggingdanceindicatesagreaterdistance.In1949Frischestablishedthatbees,throughtheirperceptionofpolarizedlight,usetheSunasapass.Healsofoundthattheyarecapableofusingth

6、ismethodoforientationwhentheSunisnotvisible,apparentlyrememberingpatternsofpolarizationpresentedbytheskyatdifferenttimesofthedayandthelocationofpreviouslyencounteredlandmarks.Beesaredependentonpollenasaproteinsourceandonflowernectaroroilsasanenergysource.Adultfema

7、lescollectpollenprimarilytofeedtheirlarvae.Thepollentheyinevitablyloseingoingfromflowertoflowerisimportanttoplantsbecausesomepollenlandsonthepistils(reproductivestructures)ofotherflowersofthesamespecies,resultingincross-pollination.Beesare,infact,themostimportantp

8、ollinatinginsects,andtheirinterdependencewithplantsmakesthemanexcellentexampleofthetypeofsymbiosisknownasmutualism,anassociationbetweenunlikeorganismsth