2018年6月大学英语六级听力常考时文：Christmas Trees and Plants思维导图

Christmashasmanytraditions,suchassingingsongs,cookingfoods,givinggiftsandsoon.SomespecialtreesandplantsalsoarepartoftheChristmastradition.Oneofthemostpopularistheevergreentree.Itisusuallyapineorafir.Itremainsgreenduringthecold,darkmonthsofwinterinthenorthernpartoftheworld.ManypeoplebuyanevergreentreeforChristmas.Theyputitintheirhouseandhangsmalllightsandcolorfulobjectsonitsbranches.SomepeoplebuylivingtreesandplantthemaftertheChristmasholiday.Otherscutdownatreeorbuyacuttree.OtherpopularplantsatChristmasarethepoinsettias.Theseplantsarevaluedfortheircolorfulbracts,whichlooklikeleaves.Mostpoinsettiasarered.Buttheyalsocanbewhiteorpink.PoinsettiasarenativetoMexico.TheyarenamedafterAmerica’sfirstambassadortoMexico,JoelPoinsett.HelikedtheplantandsentsomebacktotheUnitedStates.Manypeoplebelievethatpoinsettiasarepoisonous.Butresearcherssaythisisnottrue.Theysaythemilkyliquidintheplant’sstemcancauseaperson’sskintobecomered.Ifchildrenoranimalseattheleavestheymaybecomesick,buttheywillnotdie.ThereareseveralherbsusedinChristmasfoods,drinksanddecorations.Oneissage.Itsleavesarecookedwithturkey.Andsweet-smellingrosemaryplantsarehungondoorsorcuttolooklikelittleChristmastree.