单项选择题

A．Eliminating the errors in prices.
B．Saving store clerks’ time to do checking out.
C．Giving the customer an itemized printout.
D．Punching the item price into the cash register.
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单项选择题
A．In a grocery store.B．Over the telephone.C．At a party.D．In Mary’s house.
A．In a grocery store.
B．Over the telephone.
C．At a party.
D．In Mary’s house.
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