D。 The theory of delicacy。 The study of cognition proves that once the information is borne in mind and connected with the existing information, the learner will carry on the reorganization of a certain form to the materials or make it delicate。 Explaining the materials is one of the most valid ways。

E。 The theory of connection。 

This theory means that the cooperation between people can raise the centripetal force and friendship of them。 

F。 The theory of humanistic learning。 

The theory thinks that the companion teaching is sort of effective way to promote learning。

G。 The theory of self-control。 

This theory means that the behavior control comes from the inner demand。 And the students have three kinds of demands: the demand on love; the demand on dint; the demand on freedom and amusement。 

H。 The theory of constructive learning。 

It thinks that the inpidual studies by constructing during connecting with the environment of the world and reshuffling his own cognition structure。 Studying includes the mutual imitation, assistance and inspiration。