高中英语module5alessoninalab单元基础知识整合课件外研版必修1

高中英语module5alessoninalab单元基础知识整合课件外研版必修1内容摘要：

gs a beautiful picture. 3． (1)T (2)F I have reached the point where I am supposed to make a decision of my own. Ⅳ .语篇助记 I used to hate science, because it was difficult and plicated for me. Although through physics, I know the followings: water has three states, which are solid, liquid and gas。 when water boils, it gives off steam。 when heated, metals, such as iron used in electrical equipment, potassium, sodium, calcium and copper and so on, expand rather than contract。 steel is a mixture of iron with other substances. I still have no much interest in science. But half a year ago, a lecture made by Professor Lee, who had made many discoveries in his areas of science, astonished and changed me. We were proud of him for his winning the Nobel Prize for Chemistry. The aim of the lecture was to develop the interest of teenagers in science. Professor Lee, director of Chemistry Department of a university, brought many science facilities with him, including balance, tongs, tubes, crucible etc. He did several experiments, and one of them interested me. We drew a conclusion with his help that iron doesn39。 t rust in dry air and in air－ free water but rust in ordinary water because iron reacts with oxygen in the water. Professor Lee also told us copper makes partial reaction when heated in oxygen, while it makes no reaction when it is placed in water. What a wonderful world! At the end of the lecture, Professor Lee said teenagers were supposed to care more about the latest discoveries in science. Now I have known how snow forms and how salt dissolves in water. 译文： 我过去不喜欢科学 ， 因为它对我来说很难 ， 而且很复杂。 尽管通过物理 ， 我知道了下列一些事情：水有三态 ， 即固体 、液体和气体；当水沸腾时 ， 它会释放出蒸汽；当金属 ， 如用于电气设备中的铁 、 钾 、 钠 、 钙和铜等被加热时 ， 它们会膨胀而不是收缩；钢是铁与其他物质的混合物。 但我依旧对科学没什么兴趣。 但半年以前 ， 李教授作的一次演讲使我惊愕而且改变了我。 这位李教授在他个人的 (研究 )领域里有很多。