单项选择题

The Universal Product Code _____.

A．makes grocery shopping easier
B．makes grocery shopping complicated
C．cuts down on efficiency
D．will never be practical
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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
Computer 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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