阅读与词汇进阶3

Unit 1 Lesson 1 - A Deep Dive with Archana Anand

Unit 1 Lesson 2 - A Race to the South Pole

Unit 1 Lesson 3 - Ocean Exploration

Unit 2 Lesson 1 - Tulip Mania and Bubble Economies

Unit 2 Lesson 2 - Prices Must Go Up

Unit 2 Lesson 3 - Fast Fashion

Unit 3 Lesson 1 - World Population Growth

Unit 3 Lesson 2 - The Golden Age

Unit 3 Lesson 3 -How Does Social Media Affect

Unit 4 Lesson 1 - Disappearing Polar Ice Caps