Unit 1 SectionA Passage 1 Healthy Eating Passage 2 Obtaining Fresh Water from Icebergs SectionB Passage 1 You Are What You Eat Passage 2 Food in the 21st Century Unit 2 SectionA Passage 1 A Cup of Coffee with Salt Passage 2 Night Watch SectionB Passage 1 The Beginning of Drama Passage 2 A Funny Thing Happened to Me Unit 3 SectionA Passage 1 Megatrends in Education Passage 2 Standardized Tests SectionB Passage 1 Different Approaches to Teaching and Learning Passage 2 Is College Education Overvalued? Unit 4 SectionA Passage 1 The Decline of Dating Apps Passage 2 Clothing for Communication Passage 1 Make Your Resume Shine Passage 2 The Key to a Problem-Free Life Unit 5 SectionA Passage 1 Tornadoes Passage 2 Conservation SectionB Passage 1 The Balance of Nature Passage 2 Icebergs Unit 6 SectionA Passage 1 Agriculture and the Development of Civilization Passage 2 Telecommuting Passage 1 Time and Human Society Passage 2 New Methods of Payment Unit 7 SectionA Passage 1 Statistics Passage 2 Botany SectionB Passage 1 Why Machine Translation Cannot Replace Human Translation Passage 2 Cohesion-tension Theory Unit 8 SectionA Passage 1 Essay on Positive and Negative Impacts of Cashless Economy Passage 2 Fall Guy Passage 1 Current Attitudes toward Physical Fitness Passage 2 Exploding the Myths about the American Family Unit 9 SectionA Passage 1 Getting the Most from Online Shopping Passage 2 What Is Money and What Are Its Functions? SectionB Passage 1 Serial Returners Passage 2 Going Back. Wise Choice for Some Unit 10 SectionA Passage 1 Multinationals Readjustment for Investment in China Passage 2 Coal-fired Power Plants SectionB Passage 1 Telecommunication via Satellite Passage 2 The Salinity of Ocean Waters Keys