Basing on the existing theory of crisp matroids and fuzzy matroids, the paper studies mainly closed regular fuzzy matroids including its sub-matroid when it’s good-base; the exchange of fuzzy bases; the relations between the fuzzy bases and the fuzzy circuits; defining the base-graph and studying its properties.

A study was made through questionnaires on different behaviors of the students in class which includes learning orientation,verbal participation,dominating others,support-seeking,self-disclosure,self-assurance,sociability and the relationship between behaviors of the students in class and their achievements in the final examination.

The preface part, starting with Qiao Ji‘s character of priggish mentality, his being eager to do well in everything ,from on the foundation of related research, combining the works, the history background, is in order to reach more satisfying research.