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课件网) Unit 4 Life on Mars Period 2 Reading Language Goal 1. 能熟悉并正确运用本课时的重点单词和短语。 2. 能了解22世纪在火星上生活可能的样子。 新 课 导 入 Discussion Do you think it is possible for human beings to live on Mars Why or Why not 1. crowded planet f 。 4. space houses _____ 2. spacecraft _____ 5. robot on Mars _____ 3. speed boots _____ 6. online teacher _____ a. Need someone to teach you any time, any place b. Living in a space house is fun.... c. All about the newest spacecraft that travel in space.... d. Our shoes can make you walk faster! e. Robots could be of great help to people on Mars.... f. The population on the Earth is still increasing rapidly.... c d b e a Daniel wants to find out more about life in space in the future. He has found the following article by a famous scientist who thinks humans could live on Mars by the next century. A ▲ Moving to Mars Some people believe that humans could live on the planet Mars by the year 2100. Our own planet, the Earth, is becoming more and more crowded and polluted because of the rapid increase in population. It is hoped that people could start all over again and build a better world on Mars. Here is what life there could be like. 2. How long does it take to fly to Mars at present a. Hours. b. Months. c. Years. 3. What would the flight to Mars be like by the year 2100 a. Fast and comfortable. b. Fast but uncomfortable. c. Slow but comfortable. b b B4 Daniel is making a list of the differences between life on the Earth today and life on Mars in 2100. Help him complete his list. Use the information from the article on pages 52 and 53. Life on the Earth today Life on Mars in 2100 It is polluted and crowded. It would be clean and have lots of space. Spacecraft are slow. There is enough water and oxygen. It would be clean and have lots of space. Spacecraft would travel at the speed of light. Fast Reading Divide the text into four parts and write the main idea of each part. Part 1 Part 2 Part 3 Part 4 Paragraph 1 Paragraphs 2-4 Paragraphs 5-6 Paragraph 7 Why people move to Mars Disadvantages of life on Mars Advantages of life on Mars Conclusion At present, our spacecraft are too slow to carry large numbers of passengers to Mars—it would take months. With the development of technology, by the year 2100, the journey might only take about 20 minutes in spacecraft that travel at the speed of light! However, the spacecraft would travel so fast that the journey to Mars might be quite uncomfortable. Many people would feel ill. Humans cannot survive without water, oxygen or food. So far, nobody knows whether there would be enough water or oxygen on Mars for people there. Moreover, scientists are not sure whether plants could grow on Mars. Food would most probably be in the form of pills and would not be so tasty. Life on the Earth today Life on Mars in 2100 There are many kinds of tasty food. Gravity is not a problem for us. Many people live ... ...
