听力原文:Many teachers believe that the responsibility for learning lies with the student.
When research is assigned, the professor expects the students to take the initiative and to complete the assignment with minimal guidance. Professors expect students, particularly graduate students, to be able to exhaust the reference sources in the library.
Professors will help students who need it, but prefer that their students do not be overly dependent on them. The time that a professor can spend with a student outside of class is limited. If a student had problems with classroom work, the student should either approach a professor during office hours or make an appointment.
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A.For the sake of high grades.
B.For passing given examinations.
C.For the good of gaining knowledge.
D.For the completion of required assignments.