第二节：完形填空（共20小题；每小题1.5分，满分30分）
阅读下面短文，掌握其大意，然后从36－55各题所给的四个选项（A、B、C和D）中，选出最佳选项。
Many teachers believe that the responsibilities for learning lie in students. If a long reading assignment is given, instructors  36  students to be familiar with the  37  in the reading even if they don't discuss it in class or take an exam. The  38  student is considered to be  39  who is motivated to learn for the 40 of learning, not the one interested only in getting high grades. Sometimes homework is returned  41  brief written comments but without a grade. Even if a grade is not given, the student is  42  for learning the material assigned. When research is 43 , the professor expects the student to take it actively and to complete it with 44  guidance. It is the 45 responsibility to find books, magazines, and articles in the library. Professors do not have the time to explain 46 a university library works; they expect students, 47 graduate students, to be able to exhaust(用尽) the reference 48  in the library. Professors will help students who need it, but  49 that their students should not be 50 dependent on them. In the United States, professors have many other duties 51 teaching, such as administrative(管理的) or research work．52 , the time that a professor can spend with a student outside of class is 53 . If a student has problems with classroom work, the student should either 54 a professor during office hour 55 make an appointment.
36.   A.expect  B.make   C.hope    D.prepare
37.   A.suggestion   B.title     C.headline      D.information
38.   A.poor    B.ideal    C.common      D.disappointed
39.   A.such    B.one      C.any      D.some
40.   A.fun      B.work    C.sake     D.prize
41.   A.by       B.in C.for       D.with
42.   A.criticized     B.asked   C.responsible　      D.dismissed
43.   A.collected     B.distributed   C.assigned      D.finished
44.   A.maximum   B.minimum    C.possible       D.practical
45.   A.student's      B.professor's   C.assistant's     D.librarian's
46.   A.when   B.what    C.why     D.how
47.   A.particularly B.truly    C.obviously    D.rarely
48.   A.selections    B.collections   C.sources D.origins
49.   A.hate     B.dislike  C.like      D.prefer
50.   A.too      B.such     C.much   D.more
51.   A.but      B.except  C.with     D.besides
52.   A.However     B.Therefore    C.Furthermore       D.Otherwise
53.   A.plentiful      B.limited C.irregular      D.enough
54.   A.greet    B.annoy  C.approach     D.turn
55.   A.or     B.and      C.to         D.but