【正确答案】 1、正确答案：First, there exists peculiarity of contradiction in all forms of material movement. The understanding of matter is to know their forms of movement, because there is nothing in the world but matter in a certain form of movement. It is important that for each form of movement, attention must be paid to its relation with others. Still more importantly, what lays the foundation for knowing matter is its peculiarity, namely, the realization of fundamental difference from other motion forms. Only through this can distinctions be made between matters. All motion forms embody their own peculiar contradiction which constitutes their unique feature to distinguish themselves from others. That is the underlying reason why, or the basis on which all the matters are different in a thousand ways.