在学科奥林匹克竞赛中，化学竞赛跟其他几秒不同：一是有一份竞赛大纲，二是有一份预备题。竞赛大纲以举例的形式把知识点分成三个等级。一、二级水平的知识是参赛选手必须掌握的中学化学知识或参赛的优秀中学生可以通过中学课外活动掌握的知识。三级知识点则是过去历届竞赛涉? In the discipline Olympiad, the chemistry competition is different from the other few seconds: First, there is a competition outline, and second, there is a preparatory question. The competition outline divides knowledge points into three levels by way of example. The knowledge at the first and second levels is that the contestants must possess the knowledge of middle school chemistry or the knowledge that the outstanding middle school students participating in the secondary school can learn through extracurricular activities. The third level of knowledge is related to past competitions.