Unit1 Endangered Biodiversity and Health Risks 1
Section Ⅰ Intensive Listening 1
Human Health Depends on Biodiversity 2
Biodiversity Action Days 4
Section Ⅱ Extensive Listening 6
Tropical Biodiversity Can Thank Steady Temps 7
Why We Need Nature 7
Section Ⅲ Topics for Discussion and Report 8
Section Ⅳ Key to Exercises 9
Section Ⅴ Script for Audio and Video Clips 10
Unit2 Climatic Change and Health Risks 14
Section Ⅰ Intensive Listening 14
What Does Climate Change Have to Do with Human Health 15
Ozone Smog Pollution Expanding 16
Section Ⅱ Extensive Listening 18
Climate Change Ups Infectious Disease Risks 18
Study Shows Air Pollution Poses Greater Link to Heart Attack,Stroke 19
Section Ⅲ Topics for Discussion and Report 19
Section Ⅳ Key to Exercises 20
Section Ⅴ Script for Audio and Video Clips 21
Unit3 Urbanization and Health Risks to City dwellers 29
Section Ⅰ Intensive Listening 29
Urbanization Puts Public Health at Growing Risk 30
City Living Can Be Bad for Your Health 32
Section Ⅱ Extensive Listening 34
How Urban Policies Can Make City Living Healthier and Safer 35
Perspective on Health and Globalization 35
Section Ⅲ Topics for Discussion and Report 36
Section Ⅳ Key to Exercises 37
Section Ⅴ Script for Audio and Video Clips 38
Unit4 Noise Pollution and Health Risks 45
Section Ⅰ Intensive Listening 45
I Hear 46
Scientists Point to Possible Health Effects of Cell Phones 48
Section Ⅱ Extensive Listening 49
Traffic Noise Ups Elderly's Stroke Risk 50
Restaurant Noise Can Alter Food Taste 50
Section Ⅲ Topics for Discussion and Report 51
Section Ⅳ Key to Exercises 52
Section Ⅴ Script for Audio and Video Clips 52
Unit5 Water Scarcity and Sanitation Issue 56
Section Ⅰ Intensive Listening 56
How Neverending Quest for Water Has Defined Human History 57
Experts,Industry Leaders,Decision Makers Meet to Discuss World’s Water Problems 59
Section Ⅱ Extensive Listening 61
Impact of Safe Water on Global Health 62
How Much Water Do You Use 62
Section Ⅲ Topics for Discussion and Report 62
Section Ⅳ Key to Exercises 63
Section Ⅴ Script for Audio and Video Clips 65
Unit6 Combatting New Outbreaks of Infectious Diseases 71
Section Ⅰ Intensive Listening 71
Disease Outbreaks Reported Sooner 72
Virus Hunters Try to Unravel Flu Virus Mystery 74
Section Ⅱ Extensive Listening 76
Public Health:Try the Prevent Defense 76
Sneezes Provoke Fears beyond Illness 77
Section Ⅲ Topics for Discussion and Report 77
Section Ⅳ Key to Exercises 78
Section Ⅴ Script for Audio and Video Clips 79
Unit7 The Impo rtance of RegularHygienic Practices 84
Section Ⅰ Intensive Listening 84
Clean Hands Can Prevent the Spread of Disease 85
Putting Your Hands Together 87
Section Ⅱ Extensive Listening 89
Hand Hygiene Saves Lives 89
Health Begins at Home 90
Section Ⅲ Topics for Discussion and Report 90
Section Ⅳ Key to Exercises 91
Section Ⅴ Script for Audio and Video Clips 92
Unit8 The New DietaryGuidelines 95
Section Ⅰ I ntensive Listening 95
Diet and Human Action 96
U.S.Issues New Dietary Guidelines 98
Section Ⅱ Extensive Listening 99
U.S.School Tries to Build Healthier Food Culture,Part1 100
U.S.School Tries to Build Healthier Food Culture,Part2 100
Section Ⅲ Topics for Discussion and Report 101
Section Ⅳ Key to Exercises 102
Section Ⅴ Script for Audio and Video Clips 103
Unit9 The Longevity Diet 108
Section Ⅰ Intensive Listening 108
What Do the World’s Healthiest People Eat 109
Red Wine:A Fountain of Youth 111
Section Ⅱ Extensive Listening 112
Important Benefits of Healthy Eating,Part1 113
Important Benefits of Healthy Eating,Part2 113
Section Ⅲ Topics for Discussion and Report 114
Section Ⅳ Key to Exercises 115
Section Ⅴ Script for Audio and Video Clips 116
Unit10 Caution over Food Safety 121
Section Ⅰ Intensive Listening 121
Overhaul of Food Safety Laws in the U.S. 122
U.S.Passes Sweeping Food Safety Law 123
Section Ⅱ Extensive Listening 126
U.S.Moves to Improve Food Safety,Part 1 126
U.S.Moves to Improve Food Safety,Part 2 127
What You Didn’t Know about Cleaning 127
Section Ⅲ Topics for Discussion and Report 128
Section Ⅳ Key to Exercises 129
Section Ⅴ Script for Audio and Video Clips 130
Unit11 Health ConsequenceS of Lifestyle Factors 136
Section Ⅰ Intensive Listening 136
Study Says Preventable Diseases Reduce U.S.Life Expectancy 137
Lifestyle Choices Impact Health in China 138
Section Ⅱ Extensive Listening 141
Chronic,Noncommunicable Disease Is Leading Killer,Part1 141
Chronic,Noncommunicable Disease Is Leading Killer,Part2 142
Time Watching TV Ups Diabetes and Heart Risks 142
Section Ⅲ Topics for Discussion and Report 142
Section Ⅳ Key to Exercises 143
Section Ⅴ Script for Audio and Video Clips 144
Unit12 Health Benefits of Regular Physical Activity 150
Section Ⅰ Intensive Listening 150
Physical Activity:A Key in Preventing Some Cancers 151
Frequent Aerobic Exercisers Get Fewer Colds 153
Section Ⅱ Extensive Listening 155
A Little Exercise Can Do A Lot 155
Encourage Walking with Urban Planning 156
Section Ⅲ Topics for Discussion and Report 156
Section Ⅳ Key to Exercises 157
Section Ⅴ Script for Audio and Video Clips 158
Unit13 The Science of Mental Well-being 164
Section Ⅰ Intensive Listening 164
Suicide,the Leading Cause of Death Worldwide 165
France Wants Happiness Included in Progress Measures 167
Section Ⅱ Extensive Listening 168
Perception of Our Physical State when Depressed or Anxious 168
How Happiness Impacts Health 169
Section Ⅲ Topics for Discussion and Report 169
Section Ⅳ Key to Exercises 170
Section Ⅴ Script for Audio and Video Clips 171
Unit14 Benefits of Socializing 176
Section Ⅰ Intensive Listening 176
Family,Friends Help You Live Longer 177
Diverse Personal Networks Linked to Strong Local Economy 179
Section Ⅱ Extensive Listening 180
The Importance of Social Connectedness 181
Family Gatherings Are Opportunities for Medical Detective Work 181
Section Ⅲ Topics for Discussion and Report 181
Section Ⅳ Key to Exercises 182
Section Ⅴ Script for Audio and Video Clips 183
Unit15 Living Longer and Healthier 187
Section Ⅰ Intensive Listening 187
Long Life in the 21st Century 188
Inside to a Longer Life 189
Section Ⅱ Extensive Listening 192
The Longevity Factor 193
Secrets of a Long and Healthy Life 193
Section Ⅲ Topics for Discussion and Report 194
Section Ⅳ Key to Exercises 195
Section Ⅴ Script for Audio and Video Clips 196