It is 3 A.M. everything on the university campus seems ghostlike in the quiet, misty darkn
Most of these students don't have to be at the computer center in the middle of the night. They arch' t working on assignments. They are there because they want to be--they are irresistibly drawn there.
And they are not alone. There are hackers at computer centers all across the country. In their extreme form, they focus on nothing else. They flunk out of school and lose contact with friends; they might have difficulty finding jobs, choosing instead to wander from one computer center to an- other.
Computer science teachers are now more aware of the implications of this hacker phenomenon and are on the lookout for potential hackers and cases of computer addiction that are already severe. They know that the case of the hackers is not just the story of one person' s relationship with a ma- chine. It is the story of a society' s relationship to the so-called thinking machines, which are be- coming almost ubiquitous(无所不在的).
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