下列哪种游戏是幼儿游戏发展的高级形式（）
A.练习性游戏
B.象征性游戏
C.结构游戏
D.规则游戏
参考答案：D
— What happened to your brother?
— He slipped on the icy road _____ after a bus, and had his leg broken. [ ]
A. to chase
B. chasing
C. chased
D. having chased
易入血分，可会聚于局部，腐蚀血肉，发为痈肿疮疡的邪气是
A．风
B．湿
C．寒
D．火
E．燥
