Games, often seen as ____ activity for children, are still important in ____ development of teenagers. [ ]

A. the; the

B. an; the

C. an; 不填

D. the; 不填

施工现场应急处置方案的内容主要是( )。

A．应急工作原则
B．应急组织与职责
C．信息发布
D．应急预案体系