8Alderson, J. C., Clapham, C., Wall, D. language Test Construction and Evaluation[M]. Beijing: Foreign Language Teaching and Research Press, 2000.
9Bachman, L. E Fundamental Considerations in Language Testing[M]. Oxford: Oxford University Press,1990.
10Bachman, L. E and Palmer, A. S. Language Testing in Practice: Designing and Developing Useful Language Tests[M]. Oxford: Oxford University Press, 1996.