包括:) a7 x s/ I. m
focus 2:Academic listening and speaking skills 4 l! F y7 n" |' X0 s, C0 X- efocus on vocabulary" c$ }0 P8 l Q% M8 D6 N2 t
more reading power(second edition)1 `0 j5 ]; }% `# X$ F" e3 r( W
focus on grammar 5(third edition) 0 u2 q3 |* C4 m& _) G- tgrammar and writing$ n5 S7 F: G2 I. {9 d8 m) A5 W1 R1 N
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