4Met, M. 2006. Content-based Instruction : Defining Terms, Making Decisions [EB/OL]. [2012-08-29]. http.. // www. carla, umn. edu/cobalt/modules/principles/decisions. html.
5Riehards, J. C. & T. S. Rogers. 2001. Approaches and Methods in Language Teaching [M]. Cambridge: Cambridge University Press.
6Stryker, S.B. & B. L. Leaver. (eds.)1997. Content-based Instruction in Foreign Languages Education: Models and Methods [C]. Washington: Georgetown University Press.
