单项选择题

We can learn from the passage that those at the computer center in the middle of the night ale ______.

A．students working on a program
B．students using computers to amuse themselves
C．hard-working computer science majors
D．students deeply fascinated by the computer
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单项选择题
It can be reasonably inferred from the passage that ______.
A．the "hacker" phenomenon exists only at university computer centers
B．university computer centers are open to almost everyone
C．university computer centers are expecting outstanding programmers out of the "hackers"
D．the "hacker" phenomenon is partly attributable to the efficiency of the computer centers
单项选择题
Which of the following may be the most appropriate title for the passage
A．The Charm of Computer Science
B．A New Type of Electronic Toys
C．Compulsive Computer Programmers
D．Computer Addicts
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