参考答案

正确答案：A
解析：文章有这样的句子“Our job should be to help the child when he tells us that the can't find a way to get the right answer”，因此教师的任务不是给他们正确答案，也不是纠正他们的错误，根据文中“The idea that there is a body of knowledge to be learnt at school and used for the rest of one's life nonsense in a world as complicated and rapidly changing as ours．”的意思，作者认为在这个复杂多变的社会里，教师的任务也不应仅仅是传授一些必需的知识，故只有A正确。