人教版必修2+Unit1+Cultural+relics+Warming+up+and+readin

TheGreatWallClassicalGardensofSuzhou(1997)•Whatisaculturalrelic?•Aculturalrelicissomethingthatcanrepresentcultures,whichhassurvivedforalongtimetotellthehistory,anditisveryrareandvaluable.•Culturalrelicscanbecraftworks,buildings,paintings,musicandsoon.Accordingtothedefinition,whatcharacteristicsdoesaculturalrelichave?mysteriouspreciousoldvaluablerareculturalrelic………Canyougivemesomeexamplesofculturalrelicsthatyouknowathomeandabroad?disappearanceofculturalrelicsillegalbusinessunawarenessofitsimportanceignorancebylocalsstealingWecallfortheprotectionofculturalrelics文化遗产日theSecondSaturdayofJuneNaturaldisasters…Discussion•Whatcanwedotoprotectculturalrelics?Haveyoueverseenapieceofamber?Whatdoyouknowaboutit?Whatisamber?琥珀是史前松树脂的化石。琥珀是由千万年前植物所分泌出来的树脂,经过地壳变动而深埋地下,逐渐演化而成的一种天然化石。形成于4000万年至6000万年前,琥珀的主要成分是碳、氢、氧以及少量的硫,硬度2-3,比重1.05-1.10,熔点150C-180C,燃点250C-375C。琥珀是很“涩”的物质,没有两块琥珀是完全相同的。品种有金珀、虫珀、香珀、灵珀、石珀、花珀、水珀、明珀、蜡珀等,尤以含有完整昆虫或植物的琥珀为珍贵。Whatcharacteristicsdoestheamberhave?Ithasabeautifulyellow-browncolor.Itfeelsashardasstone.Iteasilymeltwhenheated.Onceitisheated,itcanbemadeintoanyshape.Canyouimaginewhataroommadeofamberlookslike?rawamberAmberRoom插入视频《琥珀屋》预习reading部分。2.完成导学案生词和词组的预习。参考资料：1、高中英语必修二人教版教科书2、网络图片