新概念英语 语法一课一练 第4册PDF电子书下载

Lesson 1 Finding fossil man 1

Lesson 2 Spare that spider 3

Lesson 3 Matterhorn man 5

Lesson 4 Seeing hands 7

Lesson 5 Youth 10

Lesson 6 The sporting spirit 13

Lesson 7 Bats 16

Lesson 8 Trading standards 19

Lesson 9 Royal espionage 22

Lesson 10 Silicon valley 25

Lesson 11 How to grow old 27

Lesson 12 Banks and their customers 30

Lesson 13 The search for oil 33

Lesson 14 The Butterfly Effect 35

Lesson 15 Secrecy in industry 38

Lesson 16 The modern city 41

Lesson 17 A man-made disease 44

Lesson 18 Porpoises 47

Lesson 19 The stuff of dreams 50

Lesson 20 Snake poison 53

Lesson 21 Williams S.Hart and the early'Western'film 56

Lesson 22 Knowledge and progress 59

Lesson 23 Bird flight 62

Lesson 24 Beauty 65

Lesson 25 Non-auditory effects of noise 68

Lesson 26 The past life of the earth 71

Lesson 27 The"Vasa" 73

Lesson 28 Patients and doctors 75

Lesson 29 The hovercraft 78

Lesson 30 Exploring the sea-floor 81

Lesson 31 The sculptor speaks 84

Lesson 32 Galileo reborn 87

Lesson 33 Education 90

Lesson 34 Adolescence 93

Lesson 35 Space odyssey 95

Lesson 36 The cost of government 98

Lesson 37 The process of aging 101

Lesson 38 Water and the traveller 103

Lesson 39 What every writer wants 106

Lesson 40 Waves 109

Lesson 41 Training elephants 112

Lesson 42 Recording an earthquake 115

Lesson 43 Are there strangers in space? 117

Lesson 44 Patterns of culture 119

Lesson 45 Of men and galaxies 121

Lesson 46 Hobbies 122

Lesson 47 The great escape 125

Lesson 48 Planning a share portfolio 128

参考答案 130