7Vygotsky L. Vygotsky and Education: Instructional Implications and Applications of Sociohistorical Psy- ehology [- M]. Cambridge: Cambridge University Press, 1992: 261-265.
8DeweyJ. How We Think [ M]. Kila, MT: Kessinger Publishing, 2004: 60-61.
9Waters A. Thinking and Language Learning [J]. ELT Journal, 2006 (4): 319-326.
