下面几种对事故的解释中，哪种最为正确.
Ａ、事故是造成伤亡的事故
Ｂ、事故是指意外的变故或灾祸
Ｃ、安全事故
Ｄ、工业故障
参考答案：B
She is going to take ________ lessons because she wants to be an actress. [ ]
A. musician
B. dancing
C. acting
D. piano
在______窗体中可以随意地安排字段。
