Unit5RevealingnatureStartingout课件-高中英语外研版选择性

B4U5RevealingnatureStartingoutFREETALKWhatanimalsareyouinterestedin?Groupwork.Discusstheanimalsyouareinterestedin.Dolphins:The"IntelligentSocialButterflies"oftheSeaTheyhavehighemotionalintelligence.Theyformclose-knitgroups(calledpods)andevenhelpinjuredmembersorotherspecies,likerescuinghumans.Theyusecomplexcommunication.Dolphinsmakeclicks,whistles,andbodylanguageto"talk"—scientiststhinktheir"language"ismoresophisticatedthanmanyanimals.Tigers(from"Mammals"inVertebrates)Tigersaresuchpowerfulandmajesticmammals.I’mamazedbyhowthey’retoppredatorsintheirhabitats,withtheirbeautifulstripedcoatsthathelpthemcamouflagewhenhunting.Also,it’ssadbutimportanttotalkabouthowthey’reendangered,solearningabouttigerconservationfeelsmeaningful.Butterflies(from"With3pairsoflegs"inInvertebrates)Butterfliesaresofascinatingbecauseoftheirlifecycle—fromcaterpillartochrysalistothecolorfuladultbutterfly.Theirwingshavesuchintricatepatterns,andtheyplayahugeroleinpollination,whichisvitalformanyplants.It’scoolhowsomethingsodelicatecanbesoimportantfornature.Whatdoyouthinkthetitle“Revealingnature”means?reveal:tomakeknownsomethingthatwasreviouslysecretorunknown.naturen.自然，自然界n.本质；特性“Revealingnature”likelymeansuncovering,exploring,andmakingknownthevariousaspectsofthenaturalworld.Thiscouldinvolvediscoveringhowdifferentnaturalphenomenawork,understandingthesecretsofplantandanimallife(likehowseedstravel,aswetalkedaboutearlier,orhowanimalsareclassified),delvingintotheinteractionswithinecosystems,orbringingtolightthebeauty,complexity,andhiddenmechanismsthatexistinnature.It’saboutpeelingbackthelayerstogainadeeperinsightintothenaturalenvironmentaroundus.RevealingnatureWhatdoyouexpectfromthetitle?Howmuchdoyouknowaboutnature?Manselectsonlyforhisowngood;natureonlyforthatofthebeingwhichshetends.

CharlesDarwinLookdeepintothenature,andthenyouwillunderstandeverythingbetter.

AlbertEinsteinreveal:tomakeknownsomethingthatwaspreviouslysecretorunknownActivity1Lookatthepagefromasciencemagazineandanswerthequestions.1.Whatdoyouknowabouttheseanimals?TheKomododragon

科莫多巨蜥TheKomododragonisthelargestlizardinthe

world.Itcangrowtothreemetresinlengthand

canweighabout135kilograms.Despiteitssize

andweight,itcanrunforshortdistancesatup

to20kilometresperhour.TheDuck-billedplatypus鸭嘴兽Theduck-billedplatypusisasmallegg-laying

mammal(upto60cminlength)foundonly

inEasternAustraliaincludingTasmania.Asits

namesuggests,ithasamouththatlookslikea

duck'sbill,whileitsthickfurandflattailaresimilartothoseofabeaver.Nautilus鹦鹉螺Asoneoftheoldestseaanimalsintheworld,thenautilushashardlychangedinabout500millionyears,andthatiswhyitisoftengiven

thename“livingfossil”.2.Whatothersimilaranimalsdoyouknowabout?Shareyourknowledgewiththeclass.PangolinGoldenmonkeyLynx山猫，猞猁

来自拉丁语lynx词源同light因该猫科动物在黑暗中发光的眼睛而得名Lingula海豆芽，舌形贝广泛分布在世界各处海洋中，也可以成为“活化石”Watchthevideoandanswerthequestions.After-viewingSeedsTraveling①byitself

②bythewind③bythewater⑤

bytheanimals⑥

bytheinsects④

bythebirdsWatchandanswer1Howcanseedstravel?

Howcanthisbenefitplants?Seedscanetravelgreatdistancesbybeingcarriedbythe_________,uponthe____________,__________or__________.windwateranimalspeopleWatchandanswerSeedshavea__________(better/worse)chanceatlifewhentheyare________(closer/further)awayfromtheirparentplant.Growingtoo_________(far/close)totheparentplantmeansseedsmightnotgetenough_______,________andnutrientsfromthe_______.Aspeciesis________(more/less)likelyto_________ifitsmembersaremore________(closely/widely)spread.b