Unit 1 What Is the Legend of King Arthur?
Unit 2 Why Did the Inca Empire Disappear?
Unit 3 How Do Hindus Celebrate the Diwali Festival?
Unit 4 What Is the Story Behind The 1, 001 Arabian Nights ?
Unit 5 Who Were the Samurai?
Unit 6 What Does Hair Tell Us About People?
Unit 7 How Did Chopsticks Originate?
Unit 8 Where Did Certain Wedding Customs Come From?
Self-Test 1
Unit 9 Who Are the CyberAngels?
Unit 10 Why Do People Want to Climb Mount Everest?
Unit 11 Why Is the Renaissance Important?
Unit 12 What Is the Most Popular Sport in the World?
Unit 13 How Did Convicts Help Settle Australia?
Unit 14 How Do Greetings Differ Around the World?
Unit 15 Why Is Napoleon Famous?
Unit 16 Who Invented the World Wide Web?
Self-Test 2
Chinese Version
Answer Key