Unit 4 Space Exploration Period 4 Reading for Writing（50张PPT）-2022-2023学年高一英语下学期同步精品课堂（人教版2019必修第三册）

Unit 4 Space Exploration Period 4 Reading for Writing 人教版本 必修三 * Lead-in Why do we care about water on Mars? Mars is a cold, bleak wasteland, with very thin air that we Earthlings could never breathe. However, many of the pictures our telescopes, orbiters, and rovers have sent back show signs that liquid water might have been on the surface of Mars long ago. Also, we can see ice caps at the north and south poles. Lead-in All these signs of water are very exciting. Why? Because on Earth, almost everywhere there is water, there is life. Whether the water is boiling hot or frozen, some sort of creature seems to thrive in it. Is it the same on other planets? If water once flowed on Mars, did life once thrive there too? Or, maybe there is still water on Mars, only it has gone underground. Could there be tiny life forms—like bacteria—on Mars even now? Lead-in Why do we want to find life on Mars? NASA's Mars Exploration Program is about "Following the Water." Even if we do not find life on Mars, if there is water, perhaps someday Mars could be inhabited by us! Lead-in We have known a lot about the reasons we explore the universe. But have you ever thought that it is a waste? New words If you do not see people you love for more than a year, then you definitely do not want to argue with them. We directed radio waves around the globe. Earth map of Earth on sphere express disagreement give reason for sth. New words The lesson of these experiments is not that people are shortsighted or shallow but that their preferences aren't consistent over time. The chameleon's skin replicates the pattern of its surroundings. not deep not thinking or feeling deeply regular form design plan or model New words They can monitor resources on their networks with your application. Not only should you be making regular backups, but they should be on different devices in different locations. computer display device viewing device in studio usual happening frequently New wo