basic learning problem in language 语言的基本学习问题

basic learning problem writing 书写基础学习问题

basic learning problem reading 阅读的基本学习问题

basic learning problem in writing 书写基础学习问题

basic learning problem in arithmetic 算术的基本学习问题

basic learning problem in reading 阅读的基本学习问题

basic learning problem in speaking 说话的基本学习问题

Basic learning problem speaking 说话的基本学习问题

basic motor learning problem 基本的运动学习问题