Unit 1 Creation and Innovation
Section I Open Your Ears
Section Ⅱ Store Your Bricks
Section Ⅲ Expand Your Horizon
Section 1V Express Your Idea
Unit 2 Population Social Problems
Section I Open Your Ears
Section Ⅱ Store Your Bricks
Section Ⅲ Expand Your Horizon
Section 1V Express Your Idea
Section VI Promote Your Cultural-awareness
Unit 3 Urbanization
Section I Open Your Ears
Section Ⅱ Store Your Bricks
Section m Expand Your Horizon
Section IV Express Your Idea
Unit 4 Immigration Studying Abroad
Section I Open Your Ears
Section Ⅱ Store Your Bricks
Section Ⅲ Expand Your Horizon
Section 1V Express Your Idea
Section VI Promote Your Cultural-awareness
Unit 5 Love and Marriage
Section I Open Your Ears
Section Ⅱ Store Your Bricks
Section Ⅲ Expand Your Horizon
Section 1V Express Your Idea
Unit 6 Athletic Contest
Section I Open Your Ears
Section Ⅱ Store Your Bricks
Section Ⅲ Expand Your Horizon
Section IV Express Your Idea
Section V Promote Your Cultural-awareness
Unit 7 Entrepreneurship
Section I Open Your Ears
Section Ⅱ Store Your Bricks
Section Ⅲ Expand Your Horizon
Section IV Express Your Idea
Unit 8 Food and Drug Safety
Section I Open Your Ears
Section Ⅱ Store You Bricks
Section Ⅲ Expand Your Horizon
Section IV Express Your Idea
Section VI Promote Your Cultural-awareness