问题
The writer‘s purpose in writing this passage is to__ 查看材料
A:argue for teaching bright and not-so-bright pupils in the same class
B:recommend pair work and group work for classroom activities
C:offer advice on the proper use of the library
D:emphasize the importance of appropriate formal classroom teaching
B:recommend pair work and group work for classroom activities
C:offer advice on the proper use of the library
D:emphasize the importance of appropriate formal classroom teaching
正确答案是：
