单选题 Why did the black religious music became more joyful after the Civil War?

A、 The black achieved their personal freedom.
B、 The piano was introduced into their band.
C、 There were more and more performers in their band.
D、 They had created a new musical tradition called jazz.

【正确答案】 A

【答案解析】根据原文判断，内战后黑人宗教音乐变的更为欢快是以为他们获得了解放，取得了个人自由。

A、 perform professionally for the white audience
B、 join those white minstrels at the turn of the new century
C、 play with joy and hope
D、 create a new style by separating rhythm from melody

【正确答案】 D

【答案解析】钢琴让黑人创造了一种新的音乐形式，可以把节奏和旋律分开。所以应选[D]。

A、 Ragtime was the peak of the new American music called jazz.
B、 Before ragtime American blacks had their own music tradition which had developed in public for more than 250 years.
C、 Ragtime is a special effect of a double rhythm.
D、 There was nothing new in the ragtime style.

【正确答案】 C

【答案解析】根据原文，ragtime 是爵士乐的开端，它具备一种由双重节奏构成的特殊效果。[C]为正确答案。