总序 前言 Unit One Passage A Can We Survive on the Moon? Passage B Chasing the Moon Unit Two Passage A Running on Empty? (1) Passage B Running on Empty? (2) Unit Three Passage A Biofuels Deemed a Greenhouse Threat Passage B Studies Say Clearing Land for Biofuels Will Aid Warming Unit Four Passage A Malware Goes Mobile (1) Passage B Malware Goes Mobile (2) Unit Five Passage A Is Your Car Smarter Than You Are? (1) Passage B Is Your Car Smarter Than You Are? (2) Unit Six Passage A The Memory Hacker Passage B Sweet Memories Unit Seven Passage A Robots vs. Humans in Space: Both Will Be Required Passage B The Year in Robots Unit Eight Passage A Evidence-based Fitness Programs Passage B Multigenerational Programming Unit Nine Passage A New Predictor of Disease (1) Passage B New Predictor of Disease (2) Unit Ten Passage A Sharks Passage B Sustainable Fisheries Unit Eleven Passage A The Phenomenon of Aging Passage B Calorie Restriction:Is This Anti-aging Diet Worth a Try? Unit Twelve Passage A The Rise of Renewable Energy (1) Passage B The Rise of Renewable Energy (2) Unit Thirteen Passage A Window on the Extreme Universe (1) Passage B Window on the Extreme Universe (2) Unit Fourteen Passage A Are Aliens among Us? (1) Passage B Are Aliens among Us? (2) Unit Fifteen Passage A Science 2.0-Is Open Access Science the Future? (1) Passage B Science 2.0-Is Open Access Science the Future? (2) Unit Sixteen Passage A Genetically Modified Foods:Are They Safe? (1) Passage B Genetically Modified Foods:Are They Safe? (2) Key to the Exercises