5[2]Singhal,Meena. The Internet and Foreign language Education: Benefits and Challenges[J/OL].http://www.aitech.ac.jp/iteslj/Articles/SinghalInterner.htm/1996.
6[3]Swain,M.Communicative Competence: Some Roles of Comprehensible Output in Its Developmetn.In S.Grass & C. Madden (eds). Input in second Language Aqusition[C]. Rowley, MA: Newbury House, 1985. 235—236.