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unit 1  creation and innovation¡¡section i   open your ears¡¡section ¢¢   store your bricks¡¡section ¢£  expand your horizon¡¡section 1v  express your ideaunit 2  population & social problems¡¡section i   open your ears¡¡section ¢¢   store your bricks¡¡section ¢£   expand your horizon¡¡section 1v  express your idea¡¡section vi  promote your cultural-awarenessunit 3  urbanization¡¡section i   open your ears¡¡section ¢¢   store your bricks¡¡section m   expand your horizon¡¡section iv  express your ideaunit 4  immigration & studying abroad¡¡section i   open your ears¡¡section ¢¢   store your bricks¡¡section ¢£ expand your horizon¡¡section 1v  express your idea¡¡section vi  promote your cultural-awarenessunit 5  love and marriage¡¡section i   open your ears¡¡section ¢¢   store your bricks¡¡section ¢£  expand your horizon¡¡section 1v  express your ideaunit 6  athletic contest¡¡section i   open your ears¡¡section ¢¢   store your bricks   section ¢£  expand your horizon¡¡section iv  express your idea¡¡section v  promote your cultural-awarenessunit 7  entrepreneurship¡¡section i   open your ears¡¡section ¢¢   store your bricks¡¡section ¢£  expand your horizon¡¡section iv  express your ideaunit 8  food and drug safety¡¡section i   open your ears¡¡section ¢¢   store you bricks¡¡section ¢£  expand your horizon¡¡section iv  express your idea¡¡section vi  promote your cultural-awareness