1Shute, V. J. & Psotka, J. Intelligent tutoring systems: Past, present, and future[A]. D. H. Jonassen (Ed.), Handbook of Research for Educational Communications and Technology[C]. New York: Macmillan. 1996:570-600.
3Bloom, B.S. The 2 Sigma Problem: The Search for Methods of Group Instruction as Effective as One-to-One Tutoring [J]. Educational Researcher, 1984,(13): 3-16.
4Loftin, R. B., Kenney, P., & Mastaglio, T. Outstanding Research Issues in Intelligent Tutoring Systems [DB/OL].http://www. mymicsurveys.com/site/files/pub_4.pdf.
5Lane, H. Chad.Intelligent Tutoring Systems: Prospects for Guided Practice and Efficient Learning [R].Whitepaper for the Army's Science of Learning Workshop, Hampton, VA., 2006.
6Murray, T., Blessing, S., & Ainsworth, S. (Eds.) Authoring Tools for Advanced Technology Learning Environments: Toward Costeffective Adaptive, Interactive and Intelligent Educational Software [M].Norwell, MA: Kluwer Academic Publishers,2003.
7Aleven, V., McLaren, B., Sewall, J., Koedinger, K. R. The Cognitive Tutor Authoring Tools (CTAT): Preliminary evaluation of efficiency gains [A]. M. Ikeda, K. Ashley, & T. W. Chan (Eds.), Intelligent Tutoring Systems 2006 [C],LNCS 4053 (pp. 61-70). Berlin: Springer-Verlag.2006.61-70.
9D Litman, S Silliman. ITSPOKE: An intelligent tutoring spoken dialogue system[C].Proeeedings of the 4th Meeting of HLT/NAACL,Boston, MA,2004.
10VanLehn, K., Graesser, A. C., Jackson, G. T., Jordan, P., Olney, A., & Rose, C. P. When are Tutorial Dialogues more Effective than Reading [J] Cognitive Science, 2006,(30):1-60.
5[12]Carol Filcher & Greg Miller.(2000) LEARNING STRATEGIES FOR DISTANCE EDUCATION STUDENTS.Journal of Agricultural Education.Vol.41 Issue 1.pp.60-68.
6[13]SEL ì ME TABANLIO ǎ LU(2003).The relationship between learning style and language learning strategies of pre-intermediate eap students.A thesis submitted to the graduate school of social sciences of middle east technical university for the degree of master of arts in English Language Education.
7[14]Willis,B.(1995b).Strategies for learning at a distance.In Distance Education at a Glance:Guide #9.University of Idaho,Engineering Outreach.[On-line] Available at:http://www.uidaho.edu/evol/dist9.html
