单选题 Teachers are evaluated by students mainly on ______.

A、 how well they perform in class
B、 how carefully they prepare their lessons
C、 how fluently they express themselves in class
D、 how hard they work in and after class

【正确答案】 A

【答案解析】本题为综合归纳题。文章第二段第二句讲到“That evaluation includes lots of aspects of teaching，such as explanation，preparation，using good examples，answering questions，and organization of classes．”即：对教师的评价包括教学的许多方面，例如解释，课前准备，举例，回答问题，课堂组织等。