Court. O'Connor gave the deciding vote in many important cases during her 24 years on the top court.

Rosa Parks(1913-2005)

On December 1,1955,in Montgomery, Alabama, Rosa Parks would not give up her seat on a bus to a white passenger. Her simple act landed Parks in prison. But it also set off the Montgomery bus boycott. It lasted for more than a year, and kicked off the civil-rights movement. "The only tired I was, was tired of giving in," said Parks.

21. What is Jane Addams noted for in history?

A. Her social work. B. Her teaching skills.

C. Her efforts to win a prize. D. Her community background.

22. What was the reason for O'Connor's being rejected by the law firm?

A. Her lack of proper training in law. B. Her little work experience in court.

C. The discrimination against women. D. The poor financial conditions.

23. Who made a great contribution to the civil-rights movement in the U.S.?

A. Jane Addams. B. Rachel Carson.

C. Sandra Day O'Connor. D. Rosa Park.

24. What can we infer about the women mentioned in the text?

A. They are highly educated. B. They are truly creative.

C. They are pioneers. D. They are peace-lovers.

　　Some of the world's most famous musicians recently gathered in Paris and New Orleans to celebrate the first annual International Jazz Day. UNESCO (United Nations Educational, Scientific and Cultural Organization) recently set April 30 as a day to raise awareness of jazz music, its significance, and its potential as a unifying(联合) voice across cultures.

Despite the celebrations, though, in the U.S. the jazz audience continues to shrink and grow older, and the music has failed to connect with younger generations.