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11.1 作业答案与解析 Homework answer and analysis
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11.2 语言点练习 Language Point Practice
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11.3 听力理解练习1 Listening comprehension
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11.4 答案与解析1 Answers and explanation
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11.5 听力理解练习2 Listening comprehension
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11.6 答案与解析2 Answers and explanation
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11.7 听力理解练习3 Listening comprehension
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11.8 答案与解析3 Answers and explanation
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11.9 听力理解练习4 Listening comprehension
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11.10 答案与解析4 Answers and explanation
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11.11 语音语调练习 Pronunciation and intonation
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11.12 答案5 Answers