单项选择题

Many teachers believe that the responsibilities for learning lie with the students. If a long reading assignment is given, instructors expect students to be familiar with the (47) in the reading even if they do not discuss it in class or take an examination. The (48) student is considered to be one who is motivated (激发) to learn for the sake of learning, not the one interested only in getting high grades Sometimes homework is returned with brief written comments but without a grade. Even if a grade is not given, the students is (49) for learning the material assigned. When research is (50) , the professor expects the student to take it actively and to complete it with (51) guidance. It is tile student responsibility to find hooks, magazines, and articles in the library. Professors do not have the time to explain how a university library works; the}, expect students, (52) graduate students, to be able to exhaust the reference (53) in the library. Professors will help students who need it, but (54) that their students should not be hate dependent on them. In the United States professors have many other duties besides teaching, such as administrative or research work therefore, the time that a professor can spend with a students outside of class is (55) . If a student has problems with classroom work, the student should either (56) a professor during office hours or make an appointment. WORD BANK A) ideal I) approach B) responsible J) assigned C) minimum K) information D) distribute L) abstract E) context M) exactly F) sources N) prefer G) dismissed O) particularly H) limited