Americans have contributed to many art forms, but jazz, a type music, is one of the art fo

Americans have contributed to many art forms, but jazz, a type music, is one of the art form that was started in the United States. Black Americans, who sang and played the music of their homeland, created jazz.
Jazz is a mixture of the music of Africa, the work songs the slaves sang, and religious(宗教) music. Improvisation is an important part of jazz. This means that the musicians make the music up as they go along, or create the music on the spot. This is why a jazz song might sound a little different each time it is played.
Jazz bands formed in the late 1800s. They played in bars and clubs in many towns and cities of the South, especially New Orleans. New Orleans is an international seaport, and people from all over the world come to New Orleans to hear jazz.
Jazz became more and more popular. By the 1920s, jazz was popular all over the United States. By the 1940s, you could hear jazz not only in clubs and bars, but in concert halls as well. Today, people from all over the world play jazz. Jazz musicians from the United　States, Asia, Africa, South America, and Europe meet and share their music at festivals on every continent. In this way jazz continues to grow and change.
【小题1】What can be the best title of the passage?A．American art forms. 　 　　　　B．The development of jazz.C．The music of black Americans.　D．The birthplace of jazz.【小题2】Which of the following is true?A．Jazz is now popular all over the world.B．Jazz is now a kind of religious music.C．Jazz is now played only in bars and clubs.D．Jazz is now played a little differently sometimes.【小题3】From the text it can be inferred that .A．New Orleans is the place where jazz was first producedB．the American people are all jazz loversC．jazz is merely sung by the black when workingD．jazz may become more popular as time goes on【小题4】It took about years to make jazz popular in the United States.A．200B．120C．80D．140B

(答案→)B 解析：本文主要介绍了爵士乐的发展过程，从开始出现到最后全世界有名，文章都进行了详细地描述。【小题1】B 主旨大意题，本文从第一段开始讲述爵士乐的起源，下文接着讲述爵士乐的发展过程，故B正确。【小题2】A 推理题。根据第三段最后一句people from all over the world come to New Orleans to hear jazz.说明世界各地的人都很喜欢爵士乐，故A正确。【小题3】D 推断题。根据文章Jazz bands formed in the late 1800s.和By the 1940s, you could hear jazz not only in clubs and bars, but in concert halls as well. 说明随着时间的流逝，爵士乐也在进一步慢慢的流行，故D正确。【小题4】D 细节题。根据文章Jazz bands formed in the late 1800s.和By the 1940s, you could hear jazz not only in clubs and bars, but in concert halls as well. 说明大约过了140年以后才流行开来。故D正确。

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