unit1culturalrelicswarmingupinthepast:Toprotectthecountry.now:Aplaceforpeopletovisit.Hewhodoesn’tgoto

isnotatrueman.TheGreatWall

TheGreatPyramidofGiza（吉扎金字塔）ItislocatedinEgyptnow.Itwasagravebuiltforthekingafterhedied.unit1culturalrelicswarmingupinthepast:Toprotectthecountry.now:Aplaceforpeopletovisit.Hewhodoesn’tgoto

isnotatrueman.TheGreatWall

TheGreatPyramidofGiza（吉扎金字塔）ItislocatedinEgyptnow.Itwasagravebuiltforthekingafterhedied.1)worldfamous2)madeofstones;man-made3)alonghistory4)symbolsoftheirculturesandbecometheprideofthecountry5)playedanimportantroleinhistory6)manybigeventshappenedtothemWhatarethesimilarities(相似之處)oftheseculturalrelics?discussionWhatisaculturalrelic?1.

somethingthathassurvivedforalongtime;2.oftenapartofsomethingoldthathasremainedwhentheresthasbeendestroyed;3.ittellspeopleaboutthepast.

whenAccordingtothedefinition(定義),whatcharacteristics(特點)doesaculturalrelichave?

mysterious

preciousoldvaluable

rareculturalrelic………Areculturalrelicsonlyobjectslikevasesorcantheybebuildingstoo?Lookatthepicturesanddiscusswhattheyareandwhethertheyareculturalrelicsornot?MingDynastyvaseTajMahalivorydragonboatMogaoCavesHaveyoueverseenanythingmadeofamber?Haveyoueverheardofamber?Whatisthis?RawamberwithinclusionsWhatisamber?琥珀是史前松樹脂的化石。琥珀是由千萬年前植物所分泌出來的樹脂，經過地殼變動而深埋地下，逐漸演化而成的一種天然化石。形成于4000萬年至6000萬年前，琥珀的主要成分是碳、氫、氧以及少量的硫，硬度2-3，比重1.05-1.10，熔點150C-180C，燃點250C-375C。琥珀是很“澀”的物質，沒有兩塊琥珀是完全相同的。品種有金珀、蟲珀、香珀、靈珀、石珀、花珀、水珀、明珀、蠟珀等，尤以含有完整昆蟲或植物的琥珀為珍貴。Canyouimaginewhataroommadeofamberlookslike?RawamberDoyouknowwhatpicturethisis?ApictureoftheAmberRoominStPetersburginRussia

琥珀自古以來，就被人們視為珍寶，公元前四世紀，琥珀曾被希臘人譽為"北部的黃金"，主要加工成各種裝飾品。琥珀還是名貴的中藥材。《名醫別錄》中，琥珀被列為上品，具有安神定驚、散淤血、利尿之功能。據明李時珍《本草綱目》記載：琥珀氣味甘平、無毒、能安五臟、定魂魄、消淤血、通五淋、壯心明目上、止痛安神、破血生機，治療心神不寧、失眠多夢、驚風癲癇、月經停閉、小便澀痛、淤血等病，用琥珀沖茶，有鎮靜之功。

琥珀的藥用價值高，在河南西峽尚有一段美好的傳說。在唐朝時期，有一位產婦，因產后風而病故，在埋葬時巧遇藥王孫思藐，孫發現棺木滲出血液鮮紅，滴入地上很快就滲入土中。于是孫醫生斷定，該婦女生機未盡，尚可