DoyouknowthedifferencesbetweenthenewbuildingandtheoldonesOldbuildings66brick(砖)andstonewalls.Thewallsholdupthe67.Incities,manymodernbuilding68asiftheyaremadejustofwindows.Wallsofdarkglassreachhighintothea

　　Doyouknowthedifferencesbetweenthenewbuildingandtheoldones

　　Oldbuildings66brick(砖)andstonewalls.Thewallsholdupthe67.

　　Incities,manymodernbuilding68asiftheyaremadejustofwindows.Wallsofdarkglassreachhighintotheair.Manybuildingsare69than50stories(层)tall.

　　Arewallsofglassstrong70toholdupthenewbuildingsNo,Thenewglasswallsdonotholdupthebuildings,71theyonlycoveruptheframe(框架)madeofsteel.HaveyoueverwatchedanewbuildinggoingupThesteelframeisbuilt72.Thentheglasswallsarehungontheframe.Whenthebuildingis73,theframedoesnotshow.Theoutsidelookslikewindowswithoutwalls.Theglasswallsshine74thesunwithnodecoration(装饰).Manypeoplefind75beautifuljustastheyare.