Unit One How to Build a Body Part如何制造人体器官 1
Unit Two Diabetes: the Hidden Epidemic糖尿病:隐藏的流行病 12
Unit Three Twilight Mysteries深海奥秘 26
Unit Four Biting Back at the Wily Melisa搜捕狡猾的梅莉莎病毒制造者 38
Unit Five The Suicide Seeds自动丧失繁殖力的种子 49
Unit Six Healthy Housing健康居室 60
Unit Seven Renewabie Energy: Winds of Change可再生能源:另辟蹊径 71
Unit Eight Redefining Luxury豪华汽车新概念 83
Unit Nine How Planets Are Born行星如何诞生 94
Unit Ten Coral in Peril身处险境的珊瑚 110
Unit Eleven Biology Computes生物计算机 125
Unit Twelve A World Phone全球通电话 140
Unit Thi teen Shadow in the Shailows浅海里的阴影——近海潜水艇 152
Unit Fou teen Return to Mars(Ⅰ)登陆火星(Ⅰ) 165
Unit F fteen Return to Mars(Ⅱ)登陆火星(Ⅱ) 179
Unit Sicteen Why the Your g Kill 少年为何杀人 191
Unit Sever teen Albert Einstein爱因斯坦 206
Unit Eighteen Dream Machines理想中的汽车 219
Unit Nireteen Dawn of a New Solar System新太阳系的诞生 235
Unit Twenty The New Digital Cialaxy新的数字世界 246
附录Ⅰ Recommended Words and Expressions推荐词汇表 261
附录Ⅱ Key to the Exercises练习答案 281