论文部分内容阅读
师:上节课,我们研究了液体和固体,发现了它们具有什么性质? 生:固体和液体受热后就会膨胀,受冷后就会收缩。 生:有热胀冷缩的性质。(板书:有热胀冷缩的性质) 师:自然界中,除了有液体和固
Teacher: In the last lesson, we studied liquids and solids and found out what they have. Health: Solids and liquids expand when heated and shrink when cooled. Health: There are thermal expansion and contraction of the nature. (Blackboard: the nature of thermal expansion and contraction) Teacher: In nature, in addition to liquid and solid