Unit One Currency and Finance Part A What Is Money Part B An Important Financial Institution Part C The Great Depression Part D Practice Unit Two Exploration Part A Oldest Man to Scale Mount Qumolangma Part B Machu Picchu Part C The Great Barrier Reef Part D Practice Unit Three Natural Disaster Part A Brief Introduction to Disaster Part B A Disastrous Quake Hits China Part C Aftershocks in Shanghai Part D Practice Unit Four American Customs and Culture Part A Religion in America Part B Some Characteristics one mericans Part C Social Gatherings of Americans Part D Practice Unit Five Sports Part A Olympic Spirit Part B The Colors of the 2008 Olympics Part C Mascots Part D Practice Unit Six Cloning Part A Ian Wilmut: Breaking the Clone Barrier Part B The Biotech Century Part C Clone Farm Part D Practice Unit Seven Earth & Environment Part A Climate Change Part B Water Shortage Part C President Bush Welcomes Recipients of the President's Environmental Youth Awards (Excerpt) Part D Practice Unit Eight Health and Food Part A Belly Fat and a Healthy Diet Part B Overweight and Obesity Part C Four Powerful Reasons to Eat Slower Part D Practice Final Examination