单选题：The underlined word “hacker” (Para．1) most probably means “_

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题目内容：
The underlined word “hacker” (Para．1) most probably means “________ ” A．highly recognizable names behind many of the computer technologies used today
B．the negative connotation of those computer users
C．a game, employing the tools that are readily available via the Internet
D．People who break into computer systems

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