Inthepast, AmericansusedtothinkoftheUnitedStatesasa“mel...
问题详情:Inthepast,AmericansusedtothinkoftheUnitedStatesasa“meltingpot”ofimmigrants(移民)frommanydifferentculturestotheUnitedStates,theiroldwaysmeltedawayandtheybecamepartofacompletelynewculture.TheU...