Level4
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- 4.2.4 A Video Project 2
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- 4.2.4 A Video Project 1
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- 4.2.4 Personality Types
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- 4.2.4 Economic Terms ⭐ 经济术语
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- 4.2.4 Al Capone 2
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- 4.2.4 Al Capone 1
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- 4.2.3 Currency Exchange
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- 4.2.3 Legal Terms ⭐法律条款
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- 4.2.3 Graphs & Charts ⭐各种图表
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- 4.2.3 Alcatraz 2
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- 4.2.3 Alcatraz 1
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- 4.2.2 Missing Aircraft
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- 4.2.2 Religions⭐宗教信仰
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- 4.2.2 Disaster⭐灾难
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- 4.2.2 Point of View 2
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- 4.2.2 Point of View 1
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- 4.2.1 Rude Boss
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- 4.2.1 Smartphone Addiction
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- 4.2.1 Great Discoveries⭐
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- 4.2.1 Body Systems⭐人体系统
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- 4.2.1 Extinction Events 2
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- 4.2.1 Extinction Events 1
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- 4.1.4 Relationship Advice
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- 4.1.4 Personality Types⭐
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- 4.1.4 Contemporary People⭐当代人
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- 4.1.4 The World's Population
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- 4.1.4 QuickServe 2.0⭐
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- 4.1.3 Police Traffic Stop
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- 4.1.3 Internal Organs⭐内脏
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- 4.1.3 Dental Problems⭐牙齿问题
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- 4.1.3 Harry's Trips 2
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- 4.1.3 Harry's Trips 1
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- 4.1.2 Dinner Conversation
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- 4.1.2 Geometry⭐几何学
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- 4.1.2 Science⭐科学
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- 4.1.2 A Trip to Yosemite Park 2
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- 4.1.2 A Trip to Yosemite Park 1
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- 4.1.1 Eating Out
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- 4.1.1 Landforms ⭐地貌
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- 4.1.1 Pains and Sickness⭐病痛
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- 4.1.1 Visiting a Friend 2
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- 4.1.1 Visiting a Friend 1
