3Taylor D. Miflin B. Problem-based learning:where care we now. Med Teach, 2008, 30 (8) :742.
4Iacopino AM. The influence of "new science" on dental educa- tion : current concepts, trends, and models for the future [ J]. J Dent Educ,2007, 71 (4) :450 -462.
5何克抗,林君芬,张文兰.教学系统设计[M].北京:北京师范大学出版社,2003:62.
6Levy Y. Comparing dropout and persistence in e - learning course [ J ]. Computer and Education ,2007,48 : 185 - 204.
7Sun P,Tsai R,Finger G,et al. What drives a successful e-learning? An empirical investigation of the critical factors influencing learner satisfaction [ J ]. Computer and Education,2008,50 : 1183-1202.
