科普英语进阶 强化篇 影印版PDF电子书下载

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Students'Book 3

Unit 1 The presevation of food 3

Unit 2 Refrigeration and refrigerators 11

Unit 3 Spare parts for the human body 22

Unit 4 Plants 31

Unit 5 Animals in danger 39

Revision unit 1 (Units 1-5) 48

Unit 6 From counting to computers 54

Unit 7 Sound and noise 63

Unit 8 Oil 72

Unit 9 The motor car and pollution 79

Unit 10 Tomorrow's world 88

Revision unit 2 (Units 6-10) 95

Teachers'Book 101

Introduction 101

Unit 1 The presevation of food 104

Unit 2 Refrigeration and refrigerators 106

Unit 3 Spare parts for the human body 107

Unit 4 Plants 109

Unit 5 Animals in danger 110

Revision unit 1 (Units 1-5) 112

Unit 6 From counting to computers 112

Unit 7 Sound and noise 114

Unit 8 Oil 116

Unit 9 The motor car and pollution 118

Unit 10 Tomorrow's world 120

Revision unit 2 (Units 6-10) 121

附：词汇表 123

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