单项选择题A．make computer users aware of hackingB．train hacking expertsC．enlighten people on how to prevent computer attacksD．display the harms of hacking

单项选择题A．2B．3C．4D．5

单项选择题A．oneB．twoC．fourD．six

单项选择题A．durationB．momentumC．prospectD．future

单项选择题A．agreesB．disapprovesC．hopesD．doubts