1Cheng,Y-S.A measure of second language writing anxiety: scale development and preliminary validation[J].Journal of Second Language Writing,2004(13):313-335.
2Barson, J. , Frommer, J. & Schwartz, M. Foreign language learning using E-mail in a task-oriented perspective: Interuniversity experiments in communication and collaboration [ J ]. Journal of Science Education and Technology, 1993,2 (4) , 565 - 584.
3Chun, D. Using computer networking to facilitate the acquisition of interactive competence [ J ]. System, 1994,22(1),17-31.
4Debski, R. Support of creativity and collaboration in the language classroom: A new role for technology[ J]. In R.Debski, J. Gassin & M. Smith (Eds.), Language learning through social computing. Melbourne: Applied Linguistic Association of Austin & Horwood Language Center, 1997,39 - 65.
5Haines, S. Projects for the EFL classroom: Resource materials for teachers[ M]. Walton-on-Thames Surrey, UK:Nelson, 1989.
6Meskill, C. Computers as tools for sociocollaborative language learning [ M ]. In K. Cameron ( Ed. ), CALL:Media, design and applications. Oxford: Elsevier, 1999.
7Messick, S. The interplay of evidence and consequences in the validation of performance assessments[ J ]. Educational Researcher, 1994,23 ( 2), 13 - 23.
8Spolsky, B. Conditions for second language learning [M]. Oxford: Oxford University Press, 1989.
9Stoller, F. L. Project work: A means to promote language content [J]. English Teaching Forum, 1997,35(4) ,2 -9.
10Thorn, D. Covent garden captured: An experiment in project work [ J ]. TESOL Journal, 1997,6 (4), 11 - 15.
