开放性题型是近年各地中考新出现的一种题型,也是中考热点问题之一。它具有激发学生学习兴趣,发挥学生的主体精神和探究精神,有利于训练学生的发散思维,培养学生的创新能力。纵观各地中考试题,可以将化学开放性试题大致分为以 The open question type is a new type of question that has emerged in the middle school entrance examination in recent years, and it is also one of the hot issues in the examination. It has aroused students’ interest in learning, brought into play the students’ main spirit and inquiry spirit, is conducive to training students’ divergent thinking, and cultivates students’ innovative ability. Throughout the middle school examination questions, you can roughly divide the chemistry openness test questions into