​ The blues refers to three different but closely related concepts. Which of the following is NOT included in the blues? ‍ A: the blues dance B: the blues C: the blues aesthetics D: the blues music

乡村”Blues中，最著名的两个风格是？ A: 德克萨斯Blues B: 三角洲Blues C: 西海岸Blues D: 迪西兰Blues

（2）、$A,B,C$至少两个发生 A: ${(ABC)}\cup{(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$ B: ${(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$ C: ${A}\cup{B}\cup{C}$ D: ${(\bar{A}\bar{B}\bar{C})}\cup{(\bar{A}B\bar{C})}\cup{(\bar{A}\bar{B}C)}\cup{(A\bar{B}\bar{C})}$

The blues was the influence for jazz, which means the blues is the roots of jazz.

In the early time of 20th century,______ A: American blacks wrote the first blues song B: Handy composed the song "Dallas Blues" C: the blues became popular in U.S. D: Instrumental blues appeared

Country Blues和Classic Blues是完全一样的。

be in the blues

Country Blues和Classic Blues都有着忧伤的情绪。

There are different kinds of bar, you can see main bar, __________,(酒廊) grand bar, __________, (茶室)service bar, banquet bar, __________(主题酒吧), and gentle bar.

题目包含多个选项，但学生只能选择一个答案。<br/>设A,B,C表示三个随机事件，请问下列事件应如何用A,B,C表示<br/>（2）、$A,B,C$至少两个发生 A: ${(ABC)}\cup{(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$ B: ${(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$ C: ${A}\cup{B}\cup{C}$ D: ${(\bar{A}\bar{B}\bar{C})}\cup{(\bar{A}B\bar{C})}\cup{(\bar{A}\bar{B}C)}\cup{(A\bar{B}\bar{C})}$