目录：
Unit 1 Hello, I’m Li Shan
Unit 2 Are You Wu Chen?
Unit 3 Good Morning!
Unit 4 How Are You?
Units 1-4 Review 1
Unit 5 I Have a Bag
Unit 6 How Many Books Do You Have?
Unit 7 What’s This?
Unit 8 What Color Is Your Ball?
Units 5-8 Review 2
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