单项选择题

Why are smart cards not nearly so common in American

A．Probably because American have got used to ATM bank cards or stored -value cards.
B．Probably because American is too large.
C．Probably because American like signature.
D．Probably because American like paper vouchers.

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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.

单项选择题

The aim of the article is to _____.

A．show how to use smart cards.
B．show the difference between ATM card and chip card.
C．how the smart cards have become popular.
D．persuade Americans to use smart cards.