The word "portals" (Line 2, Para 4) most probably means" _______ ".

A．people benefit from universities but do not value them
B．universities have lost their sense of purpose
C．people value universities but are hesitant to support them
D．universities are no longer effective in producing good graduates

A．must protect and defend the way it educates students
B．need to do less research and more teaching
C．must learn to be more practical and job-oriented
D．need to evaluate what their special role is in society