Unit1AlandofdiversityWarmingUpCanyouguessit?Itisaveryyoungcountryintheworld,whichhasonlyahistoryof200~300years.ThereisaStatueofLibertyintheeastcoast.Itisabout46metershigh.TheheadofficeoftheUNwassetupthere.TwoWorldWarsdidn’ttakeplacethere.Nowitisthestrongestcountryoftheworld.ALandofDiversityTheStarSpangledBanner美国国歌Oh,saycanyousee,bythedawn’searlylight,Whatsoproudlywehailedatthetwilight’s...