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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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

v

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