人力资源培训开发的方法很多，常见的有（）等等。
A、讲授法
B、讨论法
C、视听法
D、个案法
E、实验法
参考答案：A, B, C, D, E
________ is the most important for him is not his job, but his family.
A．It
B．As
C．What
D．That
自然界层次结构之间的双向因果链的含义？
