急谢!Many teachers believe that the responsibilities for learn

急谢!
Many teachers believe that the responsibilities for learning lie with the student.___51___a long
reading assignment is given,instructors expect students to be familiar with the___52__in the reading even if they do not discuss it in class or take an examination.The___53__ student is considered to be___54__who is motivated to learn for the sake of __55__,not the one interested only in getting high grades.Sometimes homework is returned____56___ brief written comments but without a grade.Even if a grade is not given.The student is __57___for learning the material assigned.When research is ___58__,the professor expects the students to take it actively and to complete it with ___59___guidance.It is the ___60___responsibility to find books,magazines,and articles in the library.Professors do not have the time to explain__61___ a university library works; they expect students,___62__graduate students,to be able to exhaust the reference___63___in the library.Professors will help students who need it,but___64____that their students should not be __65__dependent on them.In the United States professors have many other duties__66___teaching,such as administrative or research work.___67___,the time that a professor can spend with a student outside of class is ___68___.If a student has problems with classroom work,the student should either___69___a professor during office hours____70___make an appointment.

51. If
52. information
53.ideal
54. one
55.learning
56.with
57.responsible
58.assigned
59.minimum
60.student's
61. how
62. particularly
63. sources
64.prefer
65.so
66.besides
67.Therefore
68.limited
69.approach
70.to