年年出好题,年年有新意。下面就1991年高考试题比较突出的几个特点谈谈管窥之见。一、物理条件的隐蔽性试题中的关键性条件不外露,或潜含,或隐蔽。分析和解决问题时,只有根据得到的信息进行恰当的思维组合之后,才能领悟道理。此类试题侧重于考查学生审题的细致程度和准确程度,即思维的严谨性。〔例〕试题(20):一物体从高处自由落下,在 A 点与弹簧接触,到 B 点时速度为零,然后弹回。分析从 A 到 B 和从 B 到 A 过程中,物体速率如何变化。此题就是隐蔽条件潜伏在物理过程中的典型实例。物体从 A 到 B 过程 Every year is a good idea, and there are new ideas every year. The following highlights some of the highlights of the 1991 high exam questions. I. The key conditions in the concealment of physical conditions are not exposed, hidden, or hidden. When analyzing and solving problems, the truth can only be understood after proper thinking has been combined based on the information obtained. Such questions focus on the detailed level and accuracy of the examination of students’ questions, namely the rigor of thinking. 〔Example 〕 Question (20): An object falls freely from a height, contacts the spring at point A, speeds to zero at point B, and then rebounds. Analyze how the object rate changes from A to B and from B to A. This topic is a typical example of hidden conditions lurking in the physical process. Objects from A to B