Alexander Fleming, ______________ discovered penicillin, was awarded the Nobel Prize in Medicine in 1945.Đoạn văn7/45Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Alexander Fleming, ______________ discovered penicillin, was awarded the Nobel Prize in Medicine in 1945. thatwhowhomwhichGiải thíchChọn B