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新概念英语第四册第31课:The sculptor speaks
Lesson 31 The sculptor speaks雕塑家的语言First listen and then answer the following question.听录音，然后回答以下问题。What do you have to
新概念英语第四册第10课:Silicon valley
Lesson 10 Silicon valley硅谷First listen and then answer the following question.听录音，然后回答以下问题。What does the computer indus
新概念英语第四册第22课:Knowledge and progress
Lesson 22 Knowledge and progress知识和进步First listen and then answer the following question.听录音，然后回答以下问题。In what two areas
新概念英语第四册第25课:Non-auditory effects of noise
Lesson 25 Non-auditory effects of noise噪音的非听觉效应First listen and then answer the following question.听录音，然后回答以下问题。What co
新概念英语第四册第29课:The hovercraft
Lesson 29 The hovercraft气垫船First listen and then answer the following question.听录音，然后回答以下问题。What is a hovercraft riding
新概念英语第四册第34课:Adolescence
Lesson 34 Adolescence青春期First listen and then answer the following question.听录音，然后回答以下问题。What do adolescents respect in
新概念英语第四册第45课:Of men and galaxies
Lesson 45 Of men and galaxies人和星系First listen and then answer the following question.听录音，然后回答以下问题。What is the most infl
新概念英语第四册第18课:Porpoises
Lesson 18 Porpoises海豚First listen and then answer the following question.听录音，然后回答以下问题。What would you say is the main ch