Formerly , in the United States, many nurses worked as private duty nurses rather than in hospitals.
A、PreviouslyA
暂无解析
Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.
WhileBillieHolidaydidnotinventthemusiccalled"theblues",shemostassuredlyhelpedpopularizeit.
Urbanrenewalprogramsstrivetoupgradeareasthatarebecomingslums.
TheSalkvaccineisamajorfactorinthefighttoeradicatepolio.
Withtheacquisitionofsmallercompaniesbylargerones,the1960'ssawawaveofnewconglomerates.
