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1[FONT=宋体])[/FONT]Bibe r , D. et al . 1999. L ongman Gramma r of Sp okenand Writ ten English [M] . L ondon : L ongman.
2[FONT=宋体])[/FONT]Bibe r , D. et al . 2004. If you look at . . . : L exicalbundles in university teaching and text books [J ] .Applied Linguistics 25 (3) : 3712405.
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