我们一般所说激光唱盘是下述哪种光盘（）？
A.CD-DA
B.CD-ROM
C.CD-I
D.VCD
参考答案：A
—_____, What's the time?
—_____, I don't know. I don't have a watch. [ ]
A. Excuse me; Sorry
B. Sorry; Excuse me
C. Excuse me; Excuse me
D. Sorry; Sorry
嗜铬细胞瘤手术切除前采用哪种药物控制血压最佳
A．倍他乐克B．酚苄明C．可乐定D．心痛定缓释片
