电子商务师考试

【单选题】The development of the internet over the past 20 years has not only changed the way most people live their lives, but also provided a plethora of new platforms for business. The advertising industry adopt the micro blog as a ______ tool, which is a pertinent example.
A．availability
B、promotional
C．encryption
D、payment

网考网参考答案：B
网考网解析：
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