5Anderson, J. 1983. The Architecture of Cognition [M].Cambridge, MA: Harvard University Press.
6Burger, S. 1989. Content-based ESL in a sheltered psychology course: Input, output and outcomes [J].TESL Canada Journal 6: 45-57.
7Bialystok, E. 1991. Achieving proficiency in a second language: A processing description [ A]. In R.Phillipson, E. Kellerman, L. Selinker, M. Sharwood-Smith & M. Swain (eds.). Foreign/Second Language Pedagogy Research [ C ]. Philadelphia:Multilingual Matters. pp. 218-251.
8Cook, V. 1991. Second Language Learning and Teaching [M]. London: Edward Arnold.
9Ellis, R. 1993. Instructed Second Language Acquisition [ M]. Cambridge: Basil Blackwell.
10Feyten, C. M. 1991. The power of listening ability: An overlooked dimension in language acquisition [ J ].The Modern Language Journal 75/2: 173-180.
