Astronomy:the science of the stars 编号 001【学习目标】students understand the text’s forms and contents and learn about festival Astronomy 【教学重 点】 the words and the expressions in the text 【 教 学 难 点 】 How to enable the students to grasp the usages of words and in order to and understand some difficult and long sentences .【知识链接】科学家透露：宇宙可能有两个我们的宇宙和一个"隐藏的"宇宙共同"镶嵌"在"五维空间"中。在我们的宇宙早期，这两个宇宙发生了一次相撞事故，相撞产生的能量生成了我们宇宙中的物质和能量。【自主预习】Do you know how the universe began?In the 1920s in California, astronomer Edwin Hubble observed distant galaxies using an e xtremely powerful telescope. He made two mind-boggling (unbelievable) discoveries. First , Hubble figured out that the Milky Way isn’t the only galaxy. He realized that faint , cloud-like objects in the night sky are actually other galaxies far, far away. The Milky Way is just one of billions of galaxies. Second, Hubble discovered that the galaxies are constantly moving away from each other. In other words, the universe is expanding. The biggest thing that we know about is getting bigger all the time. A few years later, Belgian astronomer Georges Lemaître used Hubble‘s amaz【自学检测】a cloud of energetic dust____________ combine into__________become violent__________________ the solid surface____________explode loudly________________ produce the water vapor____________make the earth’s atmosphere__________________cool down______________ be different from_____________ disappear from_______________show one’s quality___________________dissolve harmful gases______________________, develop life______________encourage the development of…_________________ produce young______________lay eggs______________spread all ov...
