Money may cease to exist, replaced by more convenient technologies such as smart cards and digital ______.

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问题 Money may cease to exist, replaced by more convenient technologies such as smart cards and digital ______.

选项 A、cash
B、signature
C、video
D、certificate

答案A

解析由于电子技术的进步，电子商务范围的不断扩大，交易对象的增加，实体货币或许将不复存在，而由更加方便易用的技术如智能卡(smart cards)、数字现金(digital cash)取而代之。

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