Unit 1 Food and Agriculture
Unit 2 Medicine and Disease
Unit 3 Space Exploration and Expedition
Unit 4 Science and Technology
Unit 5 War and Terrorism
Unit 6 Living and Family
Unit 7 Election and Politics
Unit 8 Education and Development
Unit 9 Refugees and Humanism
Unit 10 International Meetings and International Relations
Unit 11 Environment Pollution and Protection
Unit 12 Trade and Business
Unit 13 Disasters and Accidents
Unit 14 Sports and Health
Unit 15 Entertainment and Leisure
Unit 16 Culture and Arts