单选题 We find that bright children are rarely held back by mixed-ability teaching. On the contrary, both their knowledge and experience are enriched. It is rather unreal to grade people just according to their intellectual ability without taking into account the fact that children develop at different rates. It can be quite discouraging to be at the bottom of the top grade to children!
Besides, we are concerned to develop the abilities of all our pupils to the full, not just their learning ability. We also emphasize personal qualities and social skills, and we find that mixed-ability teaching is important to all these aspects of learning.
In our classrooms, we work in various ways. Working in groups, the pupils get the opportunity to learn to cooperate, to share, and to develop leadership skills. They also learn how to cope with personal problems as well as learning how to think, to make decisions, to analyze and evaluate, and to communicate effectively. The pupils learn from each other as well as from the teacher.
Sometimes the pupils work in pairs; sometimes they work on individual tasks and assignments, and they can do this at their own speed. They also have some formal class teaching when this is appropriate. We encourage our pupils to use the library, and we teach them the skills they need in order to do this efficiently.

单选题 What does the author mean by "held back" (Line 1, Para. 1) according to the passage?

单选题 The author argues that a teacher's chief concern should be the development of the student's ______.

单选题 There are many disadvantages of grading pupils according to their intellectual ability EXCEPT ______.

单选题 Which of the following is NOT mentioned in the third paragraph?

单选题 The author's purpose of writing this passage is to ______.