Unit 1 COLLEGE EDUCATION 1
Passage 1 Universities Branch Out 3
Passage 2 What Good Is a College Education Anyway？ 8
Passage 3 Colleges Taking Another Look at the Value of Merit-based Aid 13
Unit 2 SCIENCE AND SUPERSTITION 19
Passage 1 Bermuda Triangle：Behind the Intrigue 21
Passage 2 Are You Superstitious？ 26
Passage 3 What Is Science？What Is Pseudoscience？ 31
Unit 3 OLD AND YOUNG 39
Passage 1 The New Old and the Conserva-teen 41
Passage 2 The Secrets of Long L ife Revealed？ 47
Passage 3 Reverse Age ism 52
Unit 4 SPORTS AND HEALTH 59
Passage 1 The Truth about Sports and Weight Loss 61
Passage 2 Health Benefits of Exercise 67
Passage 3 The Role of Exercise in My Life 73
Unit 5 HAPPINESS 79
Passage 1 How to Find Happiness in a Nine to Five Job 81
Passage 2 Finding Happiness：How to Appreciate the Little Things in Life—Small Ways to Find Joy in the Everyday Experience 87
Passage 3 Three Treasure Boxes—The Pursuit of Happ iness 92
Unit 6 ECOLOGY 99
Passage 1 We Can't Wish Away Cl imate Change 101
Passage 2 Going Green Without Going Broke 107
Passage 3 Overpopulation Is the Main Threat to the Planet 113
Unit 7 TECHNOLOGY AND PROGRESS 121
Passage 1 Does Technology Improve Qual ity of Our Lives？ 123
Passage 2 Technology and Our Dependence upon It 128
Passage 3 Caught in the Web—Undesirable Effect of Internet Technology 134
Unit 8 HUMANITY AND NATURE 141
Passage 1 A Grassroots Remedy 143
Passage 2 The Nature of Human Body—Chinese Explanation of Body Clock 148
Passage 3 An Unlikely Way to Save a Species：Serve It for Dinner 155
Appendix Keys and Answers 163