“共生”一词最先由德国真菌学家德贝里提出,是指不同种属生活在一起的状态。后来,这一概念逐渐用于社会科学领域,意义延伸为事物之间相互依存、互动合作的关系。笔者曾惊叹于省级优秀课评选的一个精彩教学片断,授课内容是苏人版教材八年级上册第八课第二框“不同身份不同责任”。【经典课例回放】师:责任重于泰山。上周六,作为母亲唯一的儿 The term “symbiotic” was first proposed by German dermatologist Debrem and refers to the state in which different species live together. Later, this concept was gradually used in the field of social science, the meaning extends to interdependence between things, interactive and cooperative relations. I had marvel at the provincial excellent class selection of a wonderful teaching piece, the teaching content is the eighth edition of the eighth edition of the eighth edition of the textbooks of the Soviet version of the second frame “different status and different responsibilities ”. 【Classics】 classic lesson review division: Responsibility is heavier than Taishan. Last Saturday, the only child as a mother