D．African American blues appeared before the 19th century.

　　解析　文章最后一段说明，美国不同地区也有自己不同的音乐风格。

　　答案　C

　　B

　　Shirley Chisholm is best known as the first black woman elected to United States Congress and the first black woman to run for president of the United States. However, her life was filled with much more than being the first black woman to do important things. She believed in being a person to fight for change. All her life, she worked to improve the lives of others.

　　Shirley was born in Brooklyn, New York in 1924. Though her parents had very little money, they wanted their daughters to get a good education and to have a better life. When Shirley was three years old her parents sent her and her sisters to live with their grandmother in Barbados.There Shirley received a good education from the British school system. She enjoyed the years she lived with her grandmother. Shirley always remembered the words her grandmother spoke.

　　In 1934 Shirley moved back to Brooklyn. She continued to do very well in school. She later graduated from Brooklyn College with honors. In 1949, she married Conrad Chisholm who worked as a private investigator. Together they took part in local politics. Their marriage ended almost thirty years later.

　　As a young woman, Shirley decided to become a teacher. She believed she could improve society by helping children. She worked for seven years at a child care center in the Harlem area of New York City. She attended Columbia University at night and received an advanced degree in early childhood education in 1952. She became known as an expert in children and early education. From 1959 to 1964 Shirley was an education official in the day care division of the city's office of child welfare.

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