單項選擇題() is the oldest and fastest-growing form of e-commerce, which allows e-business to collaborate, partner, and share research and complex data with other businesses.

A.B2B
B.C2C
C.B2C
D.C2B


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4.單項選擇題In 2014, Alibaba Group held its IPO in ().

A.NASDAQ
B.New York Stock Exchange
C.Hong Kong Exchanges and Clearing Limited
D.Toronto Stock Exchange