Inside a Unit vi

Series Introduction xi

CONTENTS

TRAVEL 2

READING 1 Forty Days and Forty Buses 4

READING SKILL: Understanding Time Order 8

READING 2 Perfect Place, Perfect Job 12

READING SKILL: Finding the Main Idea of a Paragraph 16

UNIT REVIEW 20

FIRE AND WATER 22

READING 1 Nature’s Fires 24

READING SKILL: Identifying Main Ideas and Supporting Details 30

READING 2 A Wall of Water 34

READING SKILL: Identifying Cause and Effect 38

UNIT REVIEW 42

THE POWER OF IDEAS 44

READING 1 A Bright Idea 46

READING SKILL: Identifying Supporting Details 51

READING 2 Clean Travel 54

READING SKILL: Understanding Pronouns 58

UNIT REVIEW 62

ONE

TWO

THREE

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FOOD 64

READING 1 Eat Less Meat 66

READING SKILL: Understanding Graphs 71

READING 2 An Unusual Garden 76

READING SKILL: Finding Definitions 81

UNIT REVIEW 84

NATURAL HISTORY 86

READING 1 Nature’s Clues 88

READING SKILL: Scanning for Specific Information 93

READING 2 The Answer is in the Trees 96

READING SKILL: Organizing Information in Outlines 100

UNIT REVIEW 104

RECYCLING 106

READING 1 From Useless to Useful 108

READING SKILL: Understanding Gerund Subjects 112

READING 2 Living in a Box 116

READING SKILL: Finding Reasons 120

UNIT REVIEW 124

FOUR

FIVE

SIX

CONTENTS (CONTINUED)

iv

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Reading and Vocabulary Focus 1

WILDLIFE RESCUE 126

READING 1 Saving Baby Elephants 128

READING SKILL: Improving Reading Speed 132

READING 2 Koalas in Parking Lots 136

READING SKILL: Identifying Reporting Verbs 140

UNIT REVIEW 144

VOLCANIC ISLANDS 146

READING 1 Tall, Young, and Active 148

READING SKILL: Understanding and Learning Technical Terms 153

READING 2 An Uncertain Future 156

READING SKILL: Understanding a Process 161

UNIT REVIEW 166

MEMORY 168

READING 1 An Amazing Memory 170

READING SKILL: Connecting Personal Experiences to a Reading 174

READING 2 Mental Athletes 178

READING SKILL: Identifying Contrast 183

UNIT REVIEW 188

SEVEN

EIGHT

NINE

Vocabulary Index 191

Credits 193

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Reading and Vocabulary Focus 1

Inside a Unit vi

Series Introduction xi

CONTENTS

FOOD 2

READING 1 Foods with Many Uses 4

READING SKILL: Recognizing Word Forms 10

READING 2 The Amazing Coconut 14

READING SKILL: Scanning for Specific Information 19

UNIT REVIEW 22

THE FACE 24

READING 1 Face Blindness 26

READING SKILL: Identifying Main Ideas 30

READING 2 Facial-Recognition Technology 34

READING SKILL: Recognizing Supporting Information 38

UNIT REVIEW 42

CITIES 44

READING 1 Livable Cities 46

READING SKILL: Understanding Cause and Effect 51

READING 2 Kazakhstan’s City of Tomorrow 54

READING SKILL: Making Inferences 59

UNIT REVIEW 62

ONE

TWO

THREE

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Reading and Vocabulary Focus 2

TECHNOLOGY 64

READING 1 Augmented Reality 66

READING SKILL: Connecting Examples to the Main Ideas They Support 71

READING 2 From Humans to Cyborgs? 74

READING SKILL: Identifying the Meaning of Unfamiliar Words 78

UNIT REVIEW 82

MUSIC 84

READING 1 Seeing Music 86

READING SKILL: Taking Notes 90

READING 2 Earworms: The Songs in Your Head 94

READING SKILL: Identifying Pronoun References 98

UNIT REVIEW 102

ANIMAL GROUPS 104

READING 1 Living Together 106

READING SKILL: Organizing Information in a Chart 113

READING 2 The Genius of Swarms 116

READING SKILL: Recognizing Facts and Theories 120

UNIT REVIEW 124

FOUR

FIVE

SIX

CONTENTS (CONTINUED)

iv

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Reading and Vocabulary Focus 2

MAKING NEWS 126

READING 1 Accidental Reporters 128

READING SKILL: Understanding Quotations 133

READING 2 Telling Kibera’s Story 136

READING SKILL: Identifying Supporting Examples 140

UNIT REVIEW 144

NOISE AND LIGHT 146

READING 1 Noisy Earth 148

READING SKILL: Evaluating Sources 153

READING 2 Our Vanishing Night 156

READING SKILL: Using Flowcharts to Show Causes and Effects 160

UNIT REVIEW 164

EXPRESSIONS 166

READING 1 In Your Face 168

READING SKILL: Understanding Words that Show Contrast 172

READING 2 The Science of Smiles 176

READING SKILL: Understanding Reference Words 180

UNIT REVIEW 184

SEVEN

EIGHT

NINE

Vocabulary Index 187

Credits 189

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Reading and Vocabulary Focus 2

Inside a Unit vi

Series Introduction xi

CONTENTS

THE BODY IN MOTION 2

READING 1 A Natural Way to Run 4

READING SKILL: Connecting Visual Materials to a Text 10

READING 2 The Runner’s High 14

READING SKILL: Connecting Ideas with Signal Words: this, these, and such 18

UNIT REVIEW 22

TIME 24

READING 1 Spring Forward, Fall Back 26

READING SKILL: Understanding the Writer’s Perspective 32

READING 2 In Search of an Accurate Calendar 36

READING SKILL: Creating Time Lines 42

UNIT REVIEW 46

WATER 48

READING 1 Drinking Water 50

READING SKILL: Recognizing Implicit Conditions 56

READING 2 The Bottled-Water Debate 60

READING SKILL: Supporting Details in a Persuasive Text 64

UNIT REVIEW 68

ONE

TWO

THREE

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Reading and Vocabulary Focus 3

TRAVEL 70

READING 1 Extreme Diving 72

READING SKILL: Finding Out Why 78

READING 2 Disaster Tourism 82

READING SKILL: Understanding Connectors of Contrast 87

UNIT REVIEW 90

ANIMAL-HUMAN RELATIONSHIPS 92

READING 1 Humans and Cattle: A Shared History 94

READING SKILL: Inferring Meaning from the Text 100

READING 2 Taming the Wild 104

READING SKILL: Understanding Processes 109

UNIT REVIEW 112

ARCHITECTURE 114

READING 1 Safer Homes in Earthquake Zones 116

READING SKILL: Understanding Information in Tables 122

READING 2 Urban Architecture in the 21st Century 126

READING SKILL: Taking Notes 132

UNIT REVIEW 136

FOUR

FIVE

SIX

CONTENTS (CONTINUED)

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Reading and Vocabulary Focus 3

GENETICS AND THE ENVIRONMENT 138

READING 1 Sibling Personalities 140

READING SKILL: Analyzing Sentence Purpose 144

READING 2 Epigenetics 148

READING SKILL: Relating Supplementary Material to the Text 154

UNIT REVIEW 158

INVENTIONS 160

READING 1 The Golden Age of Islamic Invention 162

READING SKILL: Scanning 167

READING 2 Origami: The Practical Applications of a Familiar Art 172

READING SKILL: Cohesion: Following Topic Chains 177

UNIT REVIEW 182

ROBOTICS 184

READING 1 Robots to the Rescue 186

READING SKILL: Reading as Test Preparation 192

READING 2 Humanoids 196

READING SKILL: Active Reading 201

UNIT REVIEW 206

SEVEN

EIGHT

NINE

Vocabulary Index 208

Credits 211

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Reading and Vocabulary Focus 3

Inside a Unit vi

Series Introduction xi

CONTENTS

CITY SPACES 2

READING 1 Above Manhattan 4

READING SKILL: Determining Chronology 10

READING 2 Under Paris 14

READING SKILL: Annotating a Text 21

UNIT REVIEW 26

EXTREME JOBS 28

READING 1 The Snow Patrol 30

READING SKILL: Dealing with Unknown Vocabulary 36

READING 2 Into the Volcano 40

READING SKILL: Recognizing Causes and Effects 46

UNIT REVIEW 50

ANIMAL CONSERVATION 52

READING 1 Path of the Jaguar 54

READING SKILL: Making Inferences 60

READING 2 Champion of the Underdog 64

READING SKILL: Choosing the Correct Definition 71

UNIT REVIEW 76

ONE

TWO

THREE

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Reading and Vocabulary Focus 4

NATURAL DISASTERS 78

READING 1 Sun Struck 80

READING SKILL: Understanding In-Text Definitions 86

READING 2 Tracking Tsunamis 90

READING SKILL: Connecting Visual Material to a Text 96

UNIT REVIEW 100

ART DETECTIVES 102

READING 1 Finding Fakes 104

READING SKILL: Assessing Problems and Solutions 110

READING 2 The Lost Leonardo 114

READING SKILL: Determining Certainty and Uncertainty in a Text 120

UNIT REVIEW 124

SURVIVAL SKILLS 126

READING 1 Mind over Matter 128

READING SKILL: Understanding Argument and Finding Support 133

READING 2 Journey to the North Pole 138

READING SKILL: Recognizing Contrasts 144

UNIT REVIEW 148

FOUR

FIVE

SIX

CONTENTS (CONTINUED)

iv

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Reading and Vocabulary Focus 4

NATURE’S MEDICINE 150

READING 1 Golden Worms 152

READING SKILL: Understanding Pronoun Reference 159

READING 2 The Bite that Heals 164

READING SKILL: Categorizing Information 170

UNIT REVIEW 174

LOST AT SEA 176

READING 1 Treasures of the Titanic 178

READING SKILL: Distinguishing Facts from Opinions 184

READING 2 Shipwreck Discovery 188

READING SKILL: Understanding Figurative Language 194

UNIT REVIEW 198

CULTURE AND IDENTITY 200

READING 1 Kung Fu Battles 202

READING SKILL: Analyzing the Pros and Cons of an Issue 208

READING 2 Kwame Nyong’o: Film Animator 212

READING SKILL: Recognizing Different Modes of Writing 218

UNIT REVIEW 222

SEVEN

EIGHT

NINE

Vocabulary Index 224

Credits 227

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Reading and Vocabulary Focus 4