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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
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
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
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
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
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
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
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