Which category of writing does the review Belong to（）

A．are required to conduct more independent research.
B．are required to offer more course to their students.
C．are supposed to assume more demanding duties.
D．are supposed to supervise more students in their specialty.

A．Internet-based courses may be less costly than traditional ones.
B．Teachers in traditional institutions may lose their jobs.
C．Internet-based courseware may lack variety in course content.
D．The Internet University may produce teachers with a lot of publicity.