包括: ) F: |1 E" [$ x; m; \2 A7 `$ [. a5 efocus 2:Academic listening and speaking skills {7 b5 A' L) Q) Z% U7 e% N. V
focus on vocabulary6 u2 g, N% P& k9 h/ g
more reading power(second edition)2 ~- p. H$ i* v
focus on grammar 5(third edition) " |2 S& g+ X. I6 B- Sgrammar and writing; y4 ~% A* W& A y; d5 a
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