把下列字母排列成词并造句。

1. o, c, k, o                                                                                             

2. 1, o, t, i, e, t                                                                                       

3. a, k, m, e                                                                                           

4. r, t, y, d, i                                                                                          

班杜拉的社会学习理论的核心是( )。

A．观察学习
B．强化学习
C．模仿学习
D．认知学习