1Baker,C2001.Fotmdations of Bilingual Education mad Bilingual ismM]. Clevedon,Philadephia& Adelaide:Maltilingual Matters.
2Dupuy,B.2000.Contcnt-hascd Instruction:Cbn it help ease the transition from beginning to advanced foreign language classes? VJ].Forcia Lan - guagc Annals 33.
3Hutchinson,T.& A Waters.1987.English for special ptrposes:A Learning- centered Approach[M].Camlxidge,CUP.
4Kasper,Loretta F.2000.Content-Iased College EL Instrtmion[M].Lon - don:Lawrence Erllmum.
5krashcn. 1985 The Input Hypothesis:Issues and Implications [M].Ncw York:Longman.
6Stevens, P. 1988. F_ after Tvnty years: A Reappraisal [- M]. Singapore: AMEO Regional Centre.
7Stryker, SB& B.L.Leaver.1997.Content-based Instruction in Foreign Lan- guage.
