【单选题】

Both the knowledge and experience of bright children are enriching, They are seldom held back by mixed-ability teaching. Streaming (按能力分班) pupils has many disadvantages. The child who is not so bright will feel discouraged if they are at the bottom of the grade.

Since intelligence is only one aspect of children’s ability, thus it is not rational to grade them just according to it.Developing the pupils’ entire abilities is a better choice. It has been found that mixed-ability teaching contributes to all aspects of learning.
Different ways have been applied in the classrooms. The pupils are often asked to work in groups, which gives them the opportunity to learn how to cooperate with others, to share different views, and to develop the leadership skills. They also learn how to deal with personal problems. Pupils not only learn from the teacher but also learn from each other by working in pairs and on individual tasks. They have some formal class teaching as well when it is suitable. Pupils are encouraged to use the school library, They are taught the skills which they need so that they can do this efficiently. The advanced pupil can do advanced work. No matter what age the children are, they are expected to do their best. They have been given every encouragement to obtain the goal.
What’s the author’s attitude towards mixed-ability teaching
A、Neutral. B、Critical. C、Approving. D、Questioning.