AnimalExtinction動(dòng)物滅絕 公開課PPT課件

上傳人:深*** 文檔編號(hào):90383933 上傳時(shí)間:2022-05-14 格式:PPTX 頁數(shù):15 大?。?.34MB
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1、1. Read quickly to get the main idea of the text.2. What was discovered in Chaoyang County,Liaoning Province?3. What are the possible reasons for the disappearance of dinosaurs refered in the text? 第1頁/共15頁 Animals have disappeared during the long history of the earth. The most famous of these anima

2、ls are dinosaurs. They lived on the earth tens of millions of years ago, long before humans came into being and their future seemed secure at that time. There were many different kinds of dinosaurs and a number of them used to live in China. The eggs of twenty-five species have been found in Xixia C

3、ounty, NanYang, Henan Province. Not long ago a rare new species of bird-like dinosaur was discovered in Chaoyang County,Liaoning Province. When scientists inspected the bones,they were surprised to find that these dinosaurs could not only run like the others but also climb trees.They learned this fr

4、om the way the bones were joined together.恐龍形成;產(chǎn)生檢查;視察第2頁/共15頁 Dinosaurs died out suddenly about 65 million years ago. Some scientists think it came after an unexpected incident when a huge rock from space hit the earth and put too much dust into the air. Others think the earth got too hot for the d

5、inosaurs to live on any more. Nobody knows for sure why and how dinosaurs disappeared from the earth in such a short time. We know many other wild plants,animals,insects and birds have died out more recently. According to a UN report,some 844 animals and plants have disappeared in the last 500 years

6、.事件;事變灰塵第3頁/共15頁a huge rock hit the earthput too much dustinto the airthedust blockedthe suns lightplants couldnt growmany dinosaurs died forlack of foodOthers thinks the earth got too hot tor the dinosaurs to live on any more.第4頁/共15頁第5頁/共15頁第6頁/共15頁第7頁/共15頁第8頁/共15頁第9頁/共15頁第10頁/共15頁第11頁/共15頁第12頁/共15頁Write an article about your feelings on what you will do to protect animals and our environment.第13頁/共15頁 Thank you for listening!第14頁/共15頁感謝您的觀看。第15頁/共15頁

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