Unit I:A Taste of America
Chapter 1 A Family Sees America Together
Chapter 2 The All-American Diner
Unit II:Family Life
Chapter 3 How Alike Are Identical Twins?
Chapter 4 The Search for Happiness through Adoption
Unit III:Technology on Earth and in Space
Chapter 5 Laptops for the Classroom
Chapter 6 The International Space Station:A World Project
Unit IV:Healthy Living
Chapter 7 The Dangers of Secondhand Smoke
Chapter 8 A Healthy Diet for Everyone
Unit V:International Scientists
Chapter 9 Alferd Nobel:A Man of Peace
Chapter 10 Marie Curie:A Twentieth-Century Woman
Unit VI:The Earth's Resources and Dangers
Chapter 11 Oil as an Important World Resource
Chapter 12 How Earthquakes Happen
Index of Key Words
Answer Key