班都拉是新行为主义学派的代表人物之一,他提出了( )。
A.社会学习理论B.自我强化理论C.条件反射理论D.中介变量理论
参考答案:A
His fahter _____in New York last Friday. But he _____here now.
A.is , was
B.was, is
C.were, is
D.were, was
压力容器定期检验的项目包括()。
A.外部检查
B.内部检查
C.耐压试验
D.安全检查