—You had better _____ food to the tigers.

—Sorry, I  _____ do it again.[ ]

A. throw; will,                          

B. don't throw; won't

C. not throw; won't                      

D. not to throw; will

师生关系的类型中不是学生中心论的代表人物是( )。

A．卢梭

B．赫尔巴特

C．杜威

D．陶行知