前言 Week 1 Growth Navigation (成长导航) Week 2 Energy and Resources (能源和资源) Week 3 Safety First (安全第一) Week 4 Happiness Resource (快乐源泉) Week 5 Health and Care (健康保健) Week 6 Environmental Conservation (环境保护) Week 7 Global Personage (环球人物) Week 8 Colourful Festivals (缤纷节日) Week 9 Unforgettable Experiences (叙事忆旧) Week 10 Science World (科普世界) Week 11 Future Life (未来生活) Week 12 Travelling Around the World (环游世界) Week 13 Social Phenomenons (社会现象) Week 14 Civilization and Manners (文明礼仪) Week 15 Interests and Hobbies (兴趣爱好) Week 16 Family Online (家庭在线) Week 17 World Transportation (交通运输) Week 18 Head to Head (观点交锋) Week 19 School Life (校园拾趣) Week 20 Language Learning (语言学习) 附录一 附录二 参考答案