unit 1 brief introduction to e-commerce text the emergence of e-commerce supplementary reading 1 e-commerce in china supplementary reading 2 amazon--before and after supplementary reading 3 should e-commerce be taxed like any other commerce 参考译文 unit 2 e-commerce market mechanism text electronic marketplaces supplementary reading 1 ebay--the juggernaut of e-marketplaces supplementary reading 2
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