简述有机质土的判别方法。
Which of the following is not true about the Maori protest movement?（） ["It is popular with younger urban Maoris.","It aims to gain recognition for their language,values and culture in national life.","It demands compensation for their language,values and culture in national life.","The New Zealand government has never paid any attention to the movement."]
需要是有机体的（） ["缺乏状态","生存发展要求","本能","行为的动机"]
ASCII编码包括（）类最常用的字符。 ["2","4","5","6"]
张扬最近一直在思考“我是谁？”问题。你推断他应该处于心理社会发展阶段的（）。 ["第二阶段","第六阶段","第三阶段","第五阶段"]
历史上关于艺术产生问题的主要学说是（）说、（）说、表现说、巫术说及劳动说。
