LiuSijiang(teacher):TheNetimprovesthespeedofcommunicati...
问题详情：LiuSijiang(teacher):TheNetimprovesthespeedofcommunication,buttherearemanypeoplewholieonit.Therefore,itisnaturalthatsomepeopleare 41 (worry)aboutthegirlinNanjing,whomadefriendswithanAme...