新概念四册成人拓展【48节】

Lesson 1 Finding fossil man_知识拓展（成人版）.mp4

Lesson 10 Silicon valley_知识拓展（成人版）.mp4

Lesson 11 How to grow old_知识拓展（成人版）.mp4

Lesson 12 Banks and their customers_知识拓展（成人版）.mp4

Lesson 13 The search for oil_知识拓展（成人版）.mp4

Lesson 14 The Butterfly Effect_知识拓展（成人版）.mp4

Lesson 15 Secrecy in industry_知识拓展（成人版）.mp4

Lesson 16 The modern city_知识拓展（成人版）.mp4

Lesson 17 A man-made disease_知识拓展（成人版）.mp4

Lesson 18 Porpoises_知识拓展（成人版）.mp4

Lesson 19 The stuff of dreams_知识拓展（成人版）.mp4

Lesson 2 Spare that spider_知识拓展（成人版）.mp4

Lesson 20 Snake poison_知识拓展（成人版）.mp4

Lesson 21 William S.Hart and the early‘Western’film_知识拓展（成人版）.mp4

Lesson 22 Knowledge and progress_知识拓展（成人版）.mp4

Lesson 23 Bird flight_知识拓展（成人版）.mp4

Lesson 24 Beauty_知识拓展（成人版）.mp4

Lesson 25 Non-auditory effects of noise_知识拓展（成人版）.mp4

Lesson 26 The past life of the earth_知识拓展（成人版）.mp4

Lesson 27 The ‘Vasa’ _知识拓展（成人版）.mp4

Lesson 28 Patients and doctors_知识拓展（成人版）.mp4

Lesson 29 The hovercraft_知识拓展（成人版）.mp4

Lesson 3 Matterhorn man_知识拓展（成人版）.mp4

Lesson 30 Exploring the sea-floor_知识拓展（成人版）.mp4

Lesson 31 The sculptor speaks_知识拓展（成人版） .mp4

Lesson 32 Galileo reborn_知识拓展（成人版）.mp4

Lesson 33 Education_知识拓展（成人版）.mp4

Lesson 34 Adolescence_知识拓展（成人版）.mp4

Lesson 35 Space odyssey_知识拓展（成人版）.mp4

Lesson 36 The cost of government_知识拓展（成人版）.mp4

Lesson 37 The process of ageing_知识拓展（成人版）.mp4

Lesson 38 Water and the traveller_知识拓展（成人版）.mp4

Lesson 39 What every writer wants_知识拓展（成人版）.mp4

Lesson 4 Seeing hands_知识拓展（成人版）.mp4

Lesson 40 Waves_知识拓展（成人版）.mp4

Lesson 41 Training elephants_知识拓展（成人版）.mp4

Lesson 42 Recording an earthquake_知识拓展（成人版）.mp4

Lesson 43 Are there strangers in space_知识拓展（成人版）.mp4

Lesson 44 Patterns of culture_知识拓展（成人版）.mp4

Lesson 45 Of men and galaxies _知识拓展（成人版）.mp4

Lesson 46 Hobbies _知识拓展（成人版）.mp4

Lesson 47 The great escape_知识拓展（成人版）.mp4

Lesson 48 Planning a share portfolio_知识拓展（成人版）.mp4

Lesson 5 Youth_知识拓展（成人版）.mp4

Lesson 6 The sporting spirit_知识拓展（成人版）.mp4

Lesson 7 Bats_知识拓展（成人版）.mp4

Lesson 8 Trading standards_知识拓展（成人版）.mp4

Lesson 9 Royal espionage_知识拓展（成人版）.mp4