单项选择题


A．informal
B．formal
C．spoken
D．written
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单项选择题
According to tile text, Internet banking ______.
A．requires minimal usage fees
B．offers price advantages to users
C．is more efficient than traditional banking
D．is environmentally-conscious
单项选择题
Which commercial usage of the Internet does the author NOT refer to
A．Buying airline tickets.
B．Trading stocks.
C．Paying bills.
D．Opening a bank account.
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