4Benson P The philosophy and politics of learner autonomy [A].In P Benson and P Voller(eds.).Autonomy and In- dependence in Language Learning [C]. London:Longman, 1997.
5Lunnenberg, F. C. Constructivity and technology instructional design for successful education reform [J]. Journal of Instructional Psychology, 1998.25 (2):75-81.