《英語(yǔ)中高職貫通第五》課件-lesson 8

video1.Beforeyouwatchthevideo,trytoanswerthesequestionsbyselectingamostlikelyanswer.（1）Haveyouheardoftheanimalcaribou?Selectapicturebelow.（2）Inwhatway,theanimalcalledcaribouisrelatedtotheraceagainsttime?Andwhydocaribouhavetoraceagainsttime?A.Caribouareshort-lived,andtheyhavetogrowupveryquickly.B.Caribouhavetorunagreatdistanceinordertoraiseyoungcalvesintherightseason.C.Caribouhaveahabitofrunningeverywhereinordertosurvive.D.Caribouarerarebecausetheyarefacingthedangerofbecomingextinct.Now,watchthevideowiththesoundoff,andcheckyouranswers.ReturntoPart1-1ReturntoPart1-2video2.Withthesound,watchthevideoagain,andcheckiftheexplanationsarecorrectaccordingtothevideo.Question:Whydothecaribouhavetorunagainsttime?AnswerAEveryyear,thepregnantfemalesmustrunthousandsofmilestoreachthesummermeadowsinthenorthwherethegrassgrowatitspeak.Onlywithinthisshortwindowofopportunitywillthemothercaribougivebirthandproducefortifiedsothattheirbabycariboucanhavesufficientnutrition.Withinhoursofbirth,thesebabycariboumustrunwiththeirmothers,continuingtoheadnorthinordertoeatthebestgrasswithintherightseason.AnswerBThefemalesarenowlivingunderthegreatdangerbecausethedeadlineisgettingcloser.Theyarethreatenedbythefrozenweather,andtheymustrunfastenoughtoescapethecoldweathersothattheycangivebirthsafelytotheirbabies.Theyusuallyreachthemeadowswhenthegrassisatitspeak,andtheirbabiescaneatthebestgrassandgrowupbeforethewinterisover.1.Thisepisodeofthevideowilltellatotallydifferentstoryabouttheraceagainsttime.Studythepicturesbelow,andfindoutsomecluesbeforeyouwatchthevideo.Whatstorymayitbe?Makeaguessbyselectingapossibleanswerbelow.videoPossibleAnswer：A.Fashionchangeswithtime.B.Theshopfronthastobeupdatedfromtimetotime.C.Happyhoursarealwaysshort,andpeopleshouldnotlosetimetoenjoythemselves.D.Someinsects,suchascicadas,liveinabattleagainsttime.Now,watchthevideowiththesoundoff,andwriteyouranswers.Thecorrectanswermaybe

because

.2.Atthebeginningofthevideo,thestorytellersaysthefollowingwords.Howdoyouunderstandthem?Whatkindofcreaturescanactuallystepoffthetime-treadmill?Andhowdotheysettheirownagenda?Thenaturalrhythmsoftheearthholdanimalsinavice-likegrip.Tosurvive,they'vesimplygottokeepup.Butsomeremarkablecreatureshavemanagedtostepoffthistime-treadmill.They'vesettheirownagenda.Shareyourideaswithotherclassmembers.ReturntoPart2-1ReturntoPart2-3ReturntoPart2-4video√√3.Now,readthefournumbersbelow,andwhatdotheymean?Watchthevideo,andselectthepossibleanswers.√√videoTheirpredatorsdon'tevenrecognizethesecicadasastheyareonce-in-a-lifesignforthesebirdsormammalpredators.Theydon'tknowthatthesecicadasaretastyfoodforthem.4.Nowwatchthevideoseveraltimestocompletethetasksbelow.Readthefourmysteriesaboutthelifeoftheperiodiccicadasbelow,andanswerthemaccordingtothevideostory.Afterthelarvaefalltotheground,andburythemselves,theystayundergroundforexactly17years.Whentheyre-appear,theworldhaschangedsomuch,andthebirdsandmammalpredatorsdon'tevenrecognizethemastastyfood.4.Nowwatchthevideoseveraltimestocompletethetasksbelow.Readthefourmysteriesaboutthelifeoftheperiodiccicadasbelow,andanswerthemaccordingtothevideostory.17yearsIt'snowthoughtthatthecicadaspickupcuesfromtheyearlyriseandfallofsapinplantroots.They'vecountedanother17yearsbeforetheyre-appearagain.4.Nowwatchthevideoseveraltimestocompletethetasksbelow.Readthefourmysteriesaboutthelifeoftheperiodiccicadasbelow,andanswerthemaccordingtothevideostory.Now,watchthevideowiththesoundoff,andwriteyouranswersbelow.Ithinkthestoryisabout

.Thereason(s)

.video1.Inthisepisode,youwillwatchastoryaboutabirdcalledhummingbird.Lookatthepicturebelow,andguessthepossiblestorylinesaboutitinthevideo.A.Astoryabouthowhummingbirdslayeggsandhatchthemintolittlechicksintheraceagainsttime.B.Astoryabouthowhummingbirdsdeveloptheirlongbeaksinordertosurviveintheraceagainsttime.C.Astoryabouthowhummingbirdsmateandraisefamilieswithinaveryshortwindow.D.Astoryabouthowhummingbirdsandflowerstrytooutwiteachotherinaraceforsurvival.ReturntoPart3-1ReturntoPart3-2ReturntoPart3-3videovideoTFFTFT2.Watchthevideoseveraltimes,andcheckwhichofthestatementsbelowaretrueaccordingtothestoryabouthummingbird'slongbeak.3.Workinsmallgroups,watchthevideoagain,andanswerthetwoquestionsbelow.（1）WhyaresnowbillsandtheDaturainarut?

（2）Whycouldtheybeundoingtoeachotherinthisrelationship?Writepossibleanswersbelow.Whomaypossiblybeattime,andliveforever?1.Intheabovethreeepisodes,wehaveseenhowcaribou,periodiccicadas,andhummingbirdshavesurvivedintheirraceagainsttime.Nowwatchandreadtheintroductiontothenextepisode,andanswerthequestionthroughgroupdiscussion.Byspeedingthroughdays,monthsandyearswe'veseenhowlifeadaptstoanever-changingworld,butisitpossibleforanythingtotrulybeattimeandliveforever?2.Whyistheyewtreeabletowinintheraceagainsttime?Readtheparagraphsbelow,andworkoutthesequenceofthepassage.Thenlistatleastthreereasonsforitssecretsofeternity.2.Whyistheyewtreeabletowinintheraceagainsttime?Readtheparagraphsbelow,andworkoutthesequenceofthepassage.The