4Anderson,J.C.& D.Wall Does Washback Exist? [J].Applied Linguistic,1993,14: 116-29.
5HughesA.Testing for Language Teachers [M]. Cam-bridge: Cambridge University Press,1989: 44-46.
6HughesA.Backwash and TOEFL 2000 [Z]. Unpub-lished manuscript England: University of Reading, 1993.
7Watanabe,Y.Methodology in washback studies[C]// L.C.Cheng & Y.Watanabe:Lawrence Erlbaum Associates, 2004:19-36.
8Green,A.“Watchingfor washbackrobserving the influ-ence of the international English language testing system aca-demic writing test in the classroom’.Language AssessmentQuarterly 2006: 3 /4.
