阅读下面短文，掌握大意，然后在各题所给的四个选项（A、B、C、D）中选一个最佳选项
On December 1, 1955, Rose Parks 1 work in Alabama, in America by bus as usual. She chose a seat by the window and sat down. Then more people 2 the bus and soon it was full. One man didn't have a 3 . The bus driver looked at Rosa and shouted at her: "Stand up! Give this man 4 seat!"
Rosa was tired after a long day at work. So, she 5 said:" No." This started something that changed the United States forever. 6 Rosa Parks was a 7 black woman and the man on the bus was white.
When Rosa was a young girl, she walked to school, but the white children took a bus. Rosa 8 their bus every day when it went by. "In those days," she said, "There was a white world and black world. I lived in the black world." She went to a black school and studied with black children.
When Rosa said "No", she 9 the law. The law said a black person had to 10 his or her seat to a white person. 11 came and took her to prison. Many black people in Alabama were very angry, and they 12 using the buses for a year. Then the law changed, and 13 , things started to change all over the 14 .
For the rest of her life, Rose worked to help black people in America. She died in October, 2005, 15 the age of 92.
