Formerly,intheUnitedStates,manynursesworkedasprivatedutynursesratherthaninhospitals.
A、PreviouslyCreamoftartar酒石,aweakacid,canbeaddedtoeggwhitestohelpthemfoam泡沫whentheyarebeaten
In1861itseemedinevitablethattheSouthernstateswouldbreakawayfromtheUnion.
ThefirstimportantexpositionintheUnitedStateswasheldinPhiladelphiain1876.
Formulatedin1823,theMonroeDoctrineassertedthattheAmericaswerenolongeropentoEuropeancolonization.
MaryMcCarthyssatires讽刺文学arecouchedinaprosestylethathasaclassicprecision.