Choose the words or expressions to complete the passage(选择最恰当的单词或词语，完成短文)：

　　The name of Daniel Hale Williams has been known to the black people in the United States for many years. He became a 1 in Chicago in 1883. After graduating, he taught at Northwestern University's medical school. He was asked by the president of the United States, Grover Cleveland, to go to Washington, D.C., to head the Freedmen's Hospital. It was one of the few hospitals for blacks in the country 2 .

　　He went back to Chicago to help to set up Provident Hospital. 3 it opened, Chicago's black doctors could not practice in hospitals. They had to treat patients 4 , so operations were performed on beds and kitchen tables. Dr. Williams also helped to set up a training school in Chicago for black nurses.

　　In 1893 he operated on a man who was dying from a stab wound(刺伤) in the heart. Such a wound had always 5 death. But Dr. Williams tried to save the man. 6 X-ray or blood transfusions(输血), he opened the man's chest and sewed up(修补) his heart. Everything went on well with the bold(大胆的) operation. The man 7 .

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