朗文·外研社新概念英语 新版 教师用书 4 流利英语PDF电子书下载

Key to Pre-unit Test 1 1

UNIT ONE 2

Lesson 1 Finding fossil man 2

Lesson 2 Spare that spider 7

Lesson 3 Matterhorn man 12

Lesson 4 Seeing hands 18

Lesson 5 Youth 23

Lesson 6 The sporting spirit 29

Lesson 7 Bats 34

Lesson 8 Trading standards 39

UNIT TWO 43

Lesson 9 Royal espionage 43

Lesson 10 Silicon Valley 48

Lesson 11 How to grow old 53

Lesson 12 Banks and their customers 57

Lesson 13 The search for oil 63

Lesson 14 The Butterfly Effect 68

Lesson 15 Secrecy in industry 73

Lesson 16 The modern city 78

UNIT THREE 83

Lesson 17 A man-made disease 83

Lesson 18 Porpoises 89

Lesson 19 The stuff of dreams 95

Lesson 20 Snake poison 100

Lesson 21 William S．Hart and the early‘Western’film 106

Lesson 22 Knowledge and progress 112

Lesson 23 Bird flight 118

Lesson 24 Beauty 124

Key to Pre-unit Test 2 129

UNIR FOUR 131

Lesson 25 Non-auditory effects of noise 131

Lesson 26 The past life of the earth 137

Lesson 27 The‘Vasa’ 142

Lesson 28 Patients and doctors 148

Lesson 29 The hovercraft 154

Lesson 30 Exploring the sea-floor 160

Lesson 31 The sculptor speaks 165

Lesson 32 Galileo reborn 170

UNIT FIVE 175

Lesson 33 Education 175

Lesson 34 Adolescence 181

Lesson 35 Space odyssey 187

Lesson 36 The Cost of government 193

Lesson 37 The process of ageing 198

Lesson 38 Water and the traveller 204

Lesson 39 What every writer wants 209

Lesson 40 Waves 215

UNIT SIX 220

Lesson 41 Training elephants 220

Lesson 42 Recording an earthquake 226

Lesson 43 Are there strangers in space? 231

Lesson 44 Patterns of culture 237

Lesson 45 Of men and galaxies 242

Lesson 46 Hobbies 247

Lesson 47 The great escape 252

Lesson 48 Planning a share portfolio 258