A．Those that are involved in a specific field.
B．Those that are very difficult and urgent.
C．Those that need cooperation of two writers.
D．Those whose writers are from abroad.
A．Their work can only be used as a model.
B．Most of their writers are poorly paid,
C．Most writers have doctorate degrees.
D．Students may handle the paper as they wish.
A．Universities don't pay much attention to academic achievement.
B．Professors assign too much work to students in a short time.
C．Communication failure appears between students and professors.
D．Students don't know the rules of the college they are attending.