Unit 1 Personal Relationships Sectidn 1 Check Your Vocabulary Section 2 Get to Know the Background Section 3 In-Class Reading Passage The Gift of Life Section 4 After-Class Reading Passage We All Need Friends Unit 2 Remembering and Forgetting Section 1 Check Your Vocabulary Section 2 Get to Know the Background Section 3 In-Class Reading Passage Special Delivery Section 4 After-Class Reading Passage Memory and the Human Brain Unit 3 More Than Words Section 1 Check Your Vocabulary Section 2 Get to Know the Background Section 3 In-Class Reading Passage Communication Without Words Section 4 After-Class Reading Passage Learn How to Listen Unit 4 Fresh Start Section 1 Check Your Vocabulary Section 2 Get to Know the Background Section 3 In-Class Reading Passage Fresh Start Section 4 After-Class Reading Passage Becoming a Successful Student Unit 5 Animal World Section 1 Check Your Vocabulary Section 2 Get to Know the Background Section 3 In-Class Reading Passage Do Animals Have a Culture? Section 4 After-Class Reading Passage Ready for Danger Unit 6 A World of Mystery Section 1 Check Your Vocabulary Section 2 Get to Know the Background Section 3 In-Class Reading Passage The Bermuda Triangle Section 4 After-Class Reading Passage Life Elsewhere? Unit 7 Choices in Life Section 1 Check Your Vocabulary Section 2 Get to Know the Background Section 3 In-Class Reading Passage Take Risks When There's No Danger Section 4 After-Class Reading Passage The Two Brothers Unit 8 Romantic Stories Section 1 Check Your Vocabulary Section 2 Get to Know the Background Section 3 In-Class Reading Passage A True Love Story Section 4 After-Class Reading Passage Appointment with Love Unit 9 Holidays and Special Days Section 1 Check Your Vocabulary Section 2 Get to Know the Background Section 3 In-Class Reading Passage A Merry Christmas Section 4 After-Class Reading Passage Why I Love Thanksgiving Unit 10 Agriculture Section 1 Check Your Vocabulary Section 2 Get to Know the Background Section 3 In-Class Reading Passage Farming for the Future Section 4 After-Class Reading Passage The History of Agriculture 参考答案