In1930,ayoungAfricanAmerican,VivienT.Thomas,aprofession...
問題詳情：In1930,ayoungAfricanAmerican,VivienT.Thomas,aprofessionalcarpenter,washiredasalabassistantbyafamouswhitedoctornamedDr.AlfredBlalock.Althoughhe 36wenttocollege,hehadanenormous 37 tolearnande...