（）是网上支付方式中取代纸币的最主要的支付手段。
A.网上银行
B.电子支票
C.电子钱包
D.电子现金
参考答案：D
--- Could you tell us ______ ?
--- About two weeks.
A．how often are you going to be away
B．how often we are going to be away
C．how long are we going to be away
D．how long we are going to be away
“至虚有盛候”是指
A．虚中夹实
B．实中央虚
C．真虚假实
D．真实假虚
E．虚实转化
