8Allwright R. Perceiving and pursuing learners' needs [ A ]. In Geddes M & Sturtridge G ( eds. ). lndividuali-zation [C]. Oxford: Modern English Publications, 1982. 145-157.
9Dudley-Evans T & St John M. Developments in English for Specific Purposes : A Multi-disciplinary Approach [ M ]. Cambridge : Cambridge University Press, 1998.
10Hutchinson T & Waters A. English for Specifc Purposes : A Learning-centered Approach [ M ]. Cambridge: Cambridge University Press, 1987.