单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．The man is on his way to a gas station nearby.
B．The man is driving and he has used up his gas.
C．The man has lost his way because there is no gas station nearby.
D．The man is waiting for another driver who will take him to a gas station nearby.
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单项选择题
The last sentence of the third paragraph tells us that ______.
A．any organization's networks may be at risk of security breaches
B．current technology cannot safeguard against unauthorized access to online network
C．information security should be a pressing concern for Internet commerce
D．organizations must secure their networks and data against unauthorized use
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．Applying for a credit card.
D．Opening a bank account.
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