新概念英语一课一练 第4册PDF电子书下载

Lesson 1 Finding fossil man 1

Lesson 2 Spare that spider 5

Lesson 3 Matterhorn man 9

Lesson 4 Seeing hands 12

Lesson 5 Youth 16

Lesson 6 The sporting spirit 20

Lesson 7 Bats 23

Lesson 8 Trading standards 26

Lesson 9 Royal espionage 29

Lesson 10 Silicon valley 34

Lesson 11 How to grow old 38

Lesson 12 Banks and their customers 41

Lesson 13 The search for oil 44

Lesson 14 The Butterfly Effect 47

Lesson 15 Secrecy in industry 50

Lesson 16 The modern city 54

Lesson 17 A man-made disease 57

Lesson 18 Porpoises 61

Lesson 19 The stuff of dreams 66

Lesson 20 Snake poison 70

Lesson 21 Williams S．Hart and the early"Western"film 74

Lesson 22 Knowledge and progress 78

Lesson 23 Bird flight 82

Lesson 24 Beauty 86

Lesson 25 Non-auditory effects of noise 90

Lesson 26 The past life of the earth 94

Lesson 27 The"Vasa" 98

Lesson 28 Patients and doctors 102

Lesson 29 The hovercraft 106

Lesson 30 Exploring the sea-floor 110

Lesson 31 The sculptor speaks 115

Lesson 32 Galileo reborn 119

Lesson 33 Education 123

Lesson 34 Adolescence 127

Lesson 35 Space odyssey 131

Lesson 36 The cost ofgovernment 136

Lesson 37 The process of ageing 140

Lesson 38 Water and the traveller 145

Lesson 39 What every writer wants 149

Lesson 40 Waves 153

Lesson 41 Training elephants 157

Lesson 42 Recording an earthquake 160

Lesson 43 Are there strangers in space? 165

Lesson 44 Patterns of culture 169

Lesson 45 Of men and galaxies 174

Lesson 46 Hobbies 179

Lesson 47 The great escape 184

Lesson 48 Planning a share portfolio 189

参考答案 193