It is essential that everything in advance.（）

封建社会的宗法关系所具有的特点包括()。

In studio recordings, new techniques made possible effects that not even an electronic band could produce .

试论述对性冲动心理的辅导方法。

In August 1977, a satellite to gather data about the 10 million black holes which are thought to be in the Milky Way.

以下关于人际关系特点的描述正确的有()。

Decision makers must have some way of determining of several alternatives is best.（）

试论述强迫症的分类及强迫观念的辅导方法。

the bosses cannot do without profit, workers have an edge.

简述个人中心法的共情的层次及作用。