Unit 1 Creation and Innovation Section Ⅰ Open Your Ears Section Ⅱ Store Your Bricks Section Ⅲ Expand Your Horizon Section Ⅳ Express Your Idea Unit 2 Population & Social Problems Section Ⅰ Open Your Ears Section Ⅱ Store Your Bricks Section Ⅲ Expand Your Horizon Section Ⅳ 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 Ⅳ 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 Ⅳ 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