开放题,一般可分为条件开放、过程方法开放、结果开放、完全开放等类型.开放题的条件不确定,结果不唯一,解法又很灵活,故倍受各地中考命题专家的青睐.07年各省市中考物理试卷中的开放题涉及力、热、声、光、电等物理学 Open questions can generally be divided into conditions open, process methods open, results open, completely open and other types. Open questions are uncertain in terms of conditions, the results are not unique, and the solution is very flexible, so much favored by the proposition experts throughout the year. 07 years The open questions in the physical examination papers of the provinces and cities in the examinations involve the physics of force, heat, sound, light and electricity.