Top 5 Just For Laughs Gags - September 2018 (FUNNY!!!) [360p]
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Why cant we have everything we want - Scarcity and Choice（unit1）
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360p - How Its Made Chocolate Bars - YouTube（unit5）
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7.1
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The Big Ideas of Trade（unit10）
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Marginal Utility（unit4）
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Economic Schools of Thought Crash Course Economics #14（unit3）
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14 GENRES OF MOVIES [360p]（用搞笑方式解说电影类型）
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Intro to Economics Crash Course Econ #1（unit1）
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60 Second Adventures in Economics (combined)（unit3）
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How to draw a PPF (production possibilities frontier)（unit9）
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What is Economics（unit1）
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Factors of Production（unit5）
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Thinking at the Margin（unit`4）
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Immobile Factors of Production（unit5）
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I, Pencil The Movie（unit5）
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Opportunity Cost（unit7）
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Factors of Production (Resources)（unit5）
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Marginal revenue and marginal cost Microeconomics Khan Academy（unit4）
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Episode 5 Positive vs Normative（unit8）
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2.2
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(23) The Production Possibilities Frontier – Economic Lowdown, Ep. 8（unit9）
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French colors - Couleurs 法语颜色歌
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银藤的画法（国画）
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麻雀的画法（国画）
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Fractional Distillation详解分馏
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5.1
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Consumption in a world of 321 (2012)（unit6）
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Opportunity Costs - The Road Not Taken（unit7）
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Models intermediate（情态动词详细讲解第二期——新年篇）
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6.2
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10 AMAZING SCIENCE EXPERIMENTS!十个神奇的科学实验
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Seamus Explains Specialization to Guy on the Couch（unit11）
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Marginal Cost and Average Total Cost- Micro 3.4（unit4）
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1.2
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6.1
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5 Elements of Adventure（冒险的五个元素）
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720p - YouTube（unit5）
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化学键Chemical Bonding - Ionic vs Covalent Bonds
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3.1
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8.1