Unit 1 The Age of Robots 1
Ⅰ.Teaching Content 1
Ⅱ.Key to Exercises 7
Ⅲ.Translation of the Texts 18
Unit 2 Nuclear Radiation 21
Ⅰ.Teaching Content 21
Ⅱ.Key to Exercises 26
Ⅲ.Translation of the Texts 39
Unit 3 Food Safety 43
Ⅰ.Teaching Content 43
Ⅱ.Key to Exercises 51
Ⅲ.Translation of the Texts 60
Unit 4 The Use of Nanotechnology 64
Ⅰ.Teaching Content 64
Ⅱ.Key to Exercises 70
Ⅲ.Translation of the Texts 86
Unit 5 The World Wide Web 89
Ⅰ.Teaching Content 89
Ⅱ.Key to Exercises 96
Ⅲ.Translation of the Texts 102
Unit 6 Global Warming 106
Ⅰ.Teaching Content 106
Ⅱ.Key to Exercises 112
Ⅲ.Translation of the Texts 120
Unit 7 The Universe 123
Ⅰ.Teaching Content 123
Ⅱ.Key to Exercises 131
Ⅲ.Translation of the Texts 139
Unit 8 Biology and Our Life 142
Ⅰ.Teaching Content 142
Ⅱ.Key to Exercises 147
Ⅲ.Translation of the Texts 160