题目内容：
根据短文内容，回答题。Music comes in many forms; most countries have a style of their own. At the turn of the century when jazz was born, America had no prominent ____51 ____of its own. No one knows exactly when jazz was ____52 ____, or by whom. But it began to be heard in the early 1900s. Jazz is America' s contribution to popular music. In contrast to classical music. which follows formal European traditions, jazz is spontaneous and free in form. It bubbles with energy, ____53____ the moods, interests, and emotions of the people. In the 1920s jazz sounded like America, and ____54____ it does to-day. The ____55____ of this music are as interesting as the music itself. American negroes, or blacks, as they are called today, were the jazz ____56____ They were brought to Southern States as slaves.
They were sold to plantation owners and forced to work long hours. When a Negro died his friends and relatives ____57____ a procession to carry the body to the cemetery. In New Orleans, a band often accompanied the ____58 ____On the way to the cemetery the band played slow, solemn music suited to the occasion. But on the way home the mood changed. Spirits lifted. Death had removed one of their ____59____ , but the living were glad to believe. The band played happy music, improvising ( 即兴表演) on both the harmony and the melody of the tunes ____60____ at the funeral. This music made everyone want to dance. It was an early form of jazz.
_________ A．music
B．song
C．melody
D．style
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