单项选择题
A．and formed the Kelly gang B．after killing a policeman C．after attacking a policeman D．and died during committing robberies
A．made by the hackers and put on computers B．not found by the experts C．prepackaged and found on many computers D．hard to find
A．someone who breaks into and uses someone else's computer B．someone who breaks commercials C．someone who fixes someone else's computer D．someone who does not know about computers