머리말/아이엘츠(IELTS)를 준비하시는 분들께 4
Preface 5

Unit 1 Technology
1. Advanced technology / 8
2. Mobile phone / 17
3. Computer / 27
4. Nuclear technology / 36

Unit 2 Education
1. Co-ed school / 48
2. Physical punishment / 57
3. Studying English / 66
4. Teenager’s job / 75
5. Practical skill in university / 84

Unit 3 Social issues
1. Overpopulation / 94
2. Financial support / 103
3. The crime rate / 112
4. The death penalty / 122

Unit 4 The environment
1. Rain forest / 132
2. Global warming / 141
3. Waste problem / 150
4. Zoo / 159

Unit 5 Culture
1. Online shopping / 168
2. Advertisement / 176
3. Traveling / 185
4. Traffic taxes / 195

Unit 6 Health
1. Health and diet / 206
2. Obesity / 215
3. Smoking / 225