单项选择题

Computers are beneficial because they ______.

A．eliminate price errors
B．give itemized printout to the customer
C．save time in the checkout lane and help control inventory
D．all of the above
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单项选择题
A possible title for this article could be ______.
A．Animals and Food
B．The Benefits of the Universal Product Code
C．Production Made Easy
D．Stripes in Food Advertising
单项选择题
What information CANNOT be obtained from the UPC
A．Manufacturer.
B．Item.
C．Grocery store name.
D．Price.
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