高中英语 Unit21 lesson2 brain power课件 北师大版选修7.ppt

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1、Unit21HumanBiologyLesson2BrainPowerMatchthekeywordswiththedefinitions.Keywordsatom,billion,cell,nervecell,organ1.onethousandmillion2.apartofthebodythathasaparticularpurpose,e.g.theheart,theliver3.thesmallestpieceofsththatcanexistalone4.atinypartofthebod

2、ythathelpscarrymessagestoandfromthebrain5.aunitoflivingmatterbillionorgancellNervecellatomListeningstrategies:completingatext1.Beforeyoulisten,readthetextandpredictwhatkindofinformationyouneed.rememberyoumayneedmorethanoneword2.Underlinesomeimportantwor

3、dsinthetextbeforeeachgap.3.Whileyouarelistening,listenfortheseimportantwords---theinformationyouneedshouldfollowthem4.Youcancompletethegapsusingabbreviationsatfirst—thissavestime.Thenwritetheminfull.Listentoasciencelesson.usethestrategiestocompletethega

4、psinthissummaryExercise2Thebrainconsistsofgreyand(1)matter.Itweighs(2).Ituses(3)ofthebody’senergy.Itcontainsover(4)whichmakeupnervecells.Thesenervecellsareconnectedbyelectricalimpulses.Therearemorepossibleconnectionsinonebrainthanthereare(5).Scientistsh

5、avemappeddifferentareasofthebrainwhichareresponsiblefor(6).Theareaofthebrainrelatedtocontrolling(7)couldbecomparedtominiaturefilmstudios.Oureyesandearssendsignals(8),anditisourbrainthatinterpretsthesesignalsandbuildsupapictureoftheoutsideworld.Scientist

6、shavealsoidentifiedareasresponsiblefordifferentemotions,suchas(9),loveandlaughter.Therearealsodifferentareasfordifferenttypesofthinking,suchaslearningyourownlanguageandlearninga(10)language.Theanswers:(1)white(2)justoverakilo(3)20%(4)100billioncells(5)a

7、tomsintheuniverse(6)differentfunctions(7)sightandhearing(8)allthetime(9)fear(10)foreignListentothelessonagainandanswerthesequestions:1.howdoyouthinktheteacherfeelsabouthissubject?2.whatexampledoesheusetoexplainthewaythebraincontrolsdifferentpartsofthebo

8、dy?3.whatdoeshecomparetoafilmstudio?EnthusiasticAcomputerTheareasofthebrainrelatedtocontrollingsightandhearingListentoastudentphone-inprogrammeaboutrevisingforexamsandcompletethetable:exercise4CallerAdviceCallerAdvice1.DanPlaneth