单项选择题

The word "vandalizing" in Line 17 means

A．"stealing".
B．"creating".
C．"destroying".
D．"updating".
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单项选择题
The writer mentions a thief in the second paragraph
A．to show that a hacker is more dangerous than a thief.
B．to tell people that thieves like to steal computers nowadays.
C．to demand that a protective computer system should be set up against thieves.
D．to demonstrate that hackers and thieves are the same people.
单项选择题
One of the reasons why business or government has not taken tough measures to stop hacking is that
A．it will cause fear among the public.
B．hacking has not caused much damage.
C．tough measures are illegal.
D．communication may be interrupted.
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