词汇和阅读4级:vocabulary power 3: kate Dingle p# }0 X; `. B# I( I" T' S
advanced Reading power: Beatrice S. Mikulecky & Linda Jeffries 7 y w$ G) |" q4 Q, y: e " `" c" n' R7 ^" E! H0 S1 s听说4 级: Academic Listening and Speaking skills , o& b A1 H1 }* @ " F" L+ ?0 i; y3 x 语法和写作5级: Focus on Grammer 5: Jay Maurer8 T: s b+ m) X( V, e. p
writing for Results: H.M. McGarrell & K.brillinger9 \9 E7 E6 q; W! |% ~; b+ Z F