描述
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目录
Unit 1 Hello （免费使用）
Unit 2 Nice to meet you
Unit 3 This is my father
Unit 4 Goodbye
Unit 5 How are you?
Unit 6 Review and check
Test 1 Mid-term exam
Unit 7 It's nice
Unit 8 Let's go to the park
Unit 9 On and off
Unit 10 Thank you
Unit 11 A boy and a girl
Unit 12 Review and check
Test 2 Final exam