单项选择题
You will hear three pieces of recorded material. Before listening to each one, you will have time to read the questions related to it. While listening, answer each question by choosing [A], [B], [C] or [D]. After listening, you will have time to check your answers. You will hear each piece once only. Questions are based on a brief review on American music. You now have 30 seconds to check your answers to Questions
With the piano the black musicians were able to（）
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