The heighten study as grade but more and more the feeling is difficult, analysis, understanding, judgement and abstract thinking ability are poorer, be deceived easily, be used, violate crime even.

• 随着年级的增高学习可越来越感觉困难，分析、理解、判断及抽象思维能力较差，容易上当受骗，被人利用，甚至违法犯罪。