Unit 1 The Development of China's Lunar Exploration Program Unit 2 Regional Comprehensive Economic Partnership Unit 3 China's Economy is Leading the World Unit 4 2021 Will Be a Make-or-Break Year for Multilateralism Unit 5 Africa Launches Its Free Trade Area for Development Unit 6 Markets in an Age of Anxiety Unit 7 Black Holes Unit 8 Sino-US Trade Talks Unit 9 Amid the Ruins of Sulawesi, Survivors Take Stock Unit 10 From Slogan to Movement Embraced by the Masses Unit 11 Trump Impeached for Abuse of Power and Obstruction of Congress Unit 12 The Disunited Kingdom Unit 13 China International Import Expo Unit 14 The Abe Era Ended and His Policy Continues Unit 15 Britain Successfully Left the EU Reference Key to the Exercises References