Lesson 4 An exciting trip 激动人心的旅行

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• Introduction
• Key words and expressions
• Questions on the text
• 课文
• 单词和短语
• 翻译
• 课文详注Further notes on the text
• Conclusion (Complimentary Close)

Introduction

单词和短语 Key words and expressions

Questions on the text

课文

翻译

课文详注 Further notes on the text

Conclusion (Complimentary Close)

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