A. It came from African tradition B. American natives created the blues independently C. It was associated with the idea of mental diseases D. It was actually affected by the two traditions 参考答案:D 答案解析:在第一段中第二句话讲到,布鲁斯是欧洲和非洲传统的混合物,同时也是土生土长的美国人的音乐和韵文形式,答案A将其归类为源自于非洲,是错误的t答案B则认为布鲁斯完全是本土美国人独立创造的,否定了外来文化传统