多媒体教学法的缺点不包括哪一个？ The disadvantage of electrical learning method does NOT include that __.
A.缺乏互动和反馈 the lack of interaction and feedback
B.教员难以掌控 the instructor is difficult to control the course's progress
C.需要学员有一定的知识储备 student should have a certain knowledge reserve
正确答案是C