The text mainly tells us ______.
A. the importance of money in modern society
B. the convenience and change in people’s life brought by technological innovations in banking
C. the advantages and disadvantages of ATMs
D. the development of ATMs
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According to the text, ______ is / are the currency of modern banking.
A. US dollars
B. Euro
C. gold
D. . bank cards
The first paragraph displays that money are___
___、___are the currency of modern banking.
3C productsrefers to__、___、____。