问题
填空题
According to Curran, there are six elements necessary for non-defensive learning. They are security, aggression, retention, reflection, ______ and discrimination.
答案
参考答案：attention
解析： 按照柯伦(Curran)的观点，无戒备(non-defensive)学习有6个必要因素：安全感、进取心、记忆、反思、注意力和区分。