题目内容
You are a musician. You only sell your songs on iTunes. This is an example of a _________ business.
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_________ comprises the vast majority of e-commerce by volume.
You adopt a child and need to update your healthcare benefits to include that new child. This is an example of _________ e-commerce.
You file your income taxes online. This is an example of _________ e-commerce.
You use your smartphone to look up how much money you have in your bank account. This is an example of _________ commerce.
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