不属于非语言沟通的特点有（）。
A.广泛性
B.差异性
C.真实性
D.情景性
参考答案：B
The performance ______ nearly three hours, but few people left the theatre early. [ ]
A. covered
B. reached
C. played
D. lasted
简述“礼乐牌”的音乐观点.
