1.W5L1 无........当时没写
2.W5L2 Product Life Cycle Stages
http://productlifecyclestages.com/
3.W6L3 Value Chain Analysis
https://www.strategicmanagementinsight.com/tools/value-chain-analysis.html
4.W6L4 Supply_chain
https://en.m.wikipedia.org/wiki/Supply_chain
5.W7L5 Price
https://en.m.wikipedia.org/wiki/Price
6.W7L6 Business model
https://en.m.wikipedia.org/wiki/Business_model
7.W9L9 Create your ecommerce store with Shopify
https://www.shopify.com/free-trial/ecommerce/short?jk=e%20commerce&utm_source=yabing&utm_medium=cpc&utm_campaign=Global5%20-%20Ecommerce%20(phrase)&bingadgroupid=1241348689810255&bingadid=77584321620031&bingkeywordid=77584349272249&bingnetwork=o&BOID=none
8.W9L10 Average revenue per user
https://en.m.wikipedia.org/wiki/Average_revenue_per_user
9.W10L11-12 Alibaba's Singles' Day: What We Know About The World's Biggest Shopping Event
https://www.forbes.com/sites/franklavin/2016/11/06/alibabas-singles-day-what-we-know-about-the-worlds-biggest-shopping-event/#1486018a6da7
10.W11L13-L14 Cewebrity
https://en.m.wikipedia.org/wiki/Cewebrity
11.W12L15-16 What Is an Internet Content Provider?
http://smallbusiness.chron.com/internet-content-provider-57363.html
12.W14L19-L20 Ecommerce Legals and Law
https://ecommerceguide.com/guides/ecommerce-legals/
