课件22张PPT。Consolidation & Revision Unit4 Astronomy:the science of the stars Enable Ss to consolidate what has been learned in this unit. Enable Ss to know how to grasp the necessary information when listening. Enable the Ss to understand the details about the passage.Step Ⅱ Reading practice Read the passage on P66 and choose the best answer.1. Which statement is true according to the text? A. Black holes cannot be seen. B. You can only “see” black holes by watching the movements of the objects caught by its gravity. C. All objects must go into a “black holes” when they are caught by its gravity. D. Objects go round inside the edge of the “black hole”.2. Why the spaceship the writer and Li Yanping took wasn’t eaten by “black holes”? A. Because they controlled the spaceship well. B. Because they have a good knowledge of “black hole”. C. Because they were very lucky. D. Because They didn’t go inside the edge of a “black hole”. 3.The writer wrote the passage in order to_____. A. tell something about the “black hole” B. let readers know something about the “black hole”. C. tell the writer’s exciting experience escaping a “black hole”. D. get readers to be interested in astronomy.1. Discuss possible problems of making a space walk.Step III Listening practiceBefore listening discuss in pairs what you know of the problems of making a space walk. Make a list. Then listen to the tape and check if you were right.Problems: to stop you from flying off the spaceship to protect you from cold and hot .... 2. In pairs read the words below and then discuss what you know about the vocabulary. Then listen to the tape again and number the words as you hear them. _____Hubble telescope _____oxygen _____waist _____gravity boots _____engines _____weigh _____tiring _____feathers①②③④⑤⑥⑧⑦(1) Why did Li Yanping have to repair the Hubble telescope? (2) Which two ways does his spacesuit protect him in space? (3) How does he move about in space? (4) What does it feel like in space? (5) What happens if you fly too far from the spaceship? (6) Was the repair successful? 3. Listen to the tape and make notes to answer the questions (1) Why did Li Yanping have to repair the Hubble telescope? (2) Which two ways does his spacesuit protect him in space? (3) How does he move about in space? 3. Listen to the tape and make notes to answer the questions It needed cleaning so that it would work better.① It carries oxygen. ② It carries hot and cold water to warm him if it's too cold and cool him if it's too hot.He used small engines. (4) What does it feel like in space? (5) What happens if you fly too far from the spaceship? (6) Was the repair successful?Strange because you do not weigh anything. You can fly around like feathers.You would continue into space and never get back to the spaceship.Yes. The Hubble telescope works well now. 1. Topic words: (1) 航天员_____ (2) 现象_____ (3) 技术_____ (4) 天文学_____ (5) 太空行走_____ (6) 探险_____ (7) 发射_____ (8) ... ...
