单项选择题

What will determine that people will continue to use the product

A．The product’s own worth.
B．The product’s design.
C．The .product’s advertising.
D．The proudct’s pric
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单项选择题
The following are advantages of the chip card except that ______.
A．consumers bother less with pocket change.
B．the transaction doesn’t require a signature, a PIN number.
C．if you lose the card, you lose the money.
D．it is more convenient.
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