科普英语进阶 提高篇PDF电子书下载

Students'Book 3

Unit 1 How do scientists work? 3

Unit 2 Classification 10

Unit 3 The power of water 19

Unit 4 Water power 25

Revision unit 1 (Units 1-4) 32

Unit 5 Two vital elements 35

Unit 6 Water pollution 42

Unit 7 Jet propulsion 48

Unit 8 Our neighbours in space 55

Revision unit 2 (Units 5-8) 63

Unit 9 The uses of mathematics 68

Unit 10 The weather 74

Unit 11 The power of the lens 83

Unit 12 Rocks 91

Revision unit 3 (Units 9-12) 99

Introduction 107

Teachers'Book 107

Unit 1 How do scientists work? 110

Unit 2 Classification 111

Unit 3 The power of water 113

Unit 4 Water power 115

Revision unit 1 (Units 1-4) 117

Unit 5 Two vital elements 117

Unit 6 Water pollution 118

Unit 7 Jet propulsion 120

Unit 8 Our neighbours in space 121

Revision unit 2 (Units 5-8) 122

Unit 9 The uses of mathematics 123

Unit 10 The weather 125

Unit 11 The power of the lens 127

Unit 12 Rocks 129

Revision unit 3 (Units 9-12) 132

附：词汇表 135

专有名词 140