A．Most of them are top students majoring in computer programming.
B．For them, computer programming is the sole purpose for their life.
C．They can always stay with the computer at the center without eating and sleeping.
D．They lose all of their friends because of their deep "love" for the computer.

A．the "hacker" phenomenon exists only at university computer centers
B．university computer centers are open to every student
C．university computer centers are expecting outstanding programmers become the "hackers"
D．the "hacker" phenomenon is partly attributable to the deficiency of the computer centers