单项选择题

Imagine the offline moment in your life, suppose you go for groceries in a supermarket, buy a snack in street shops, eat at some restaurants, go to watch a movie, or take a subway, you just scan their （） on their wall or at the cashier, the mobile pay pag

e would automatically pop up created by those mobile payment apps.
A.QR code
B.money
C.card
D.bill

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关系市场营销能为企业带来一种独特的资产，即

A．超额利润
B．设备和技术
C．企业规模
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The first quantum communication satellite was named after Chinese ancient scientist （） for his early achievements in physical optics.

A.Laozi
B.Mozi
C.Kongzi
D.Zhuangzi