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以下为课件内提取的文本内容,仅供参考: Integrating skills Lead in Who will you think of about botany? On the Origin of Species Gregor Mendel Fast reading 1. Who is the text about? The text is about three important scientists: Darwin, Mendel and Turesson. 2. What did they do? They did a lot of research and experiment. 3. How many parts are there in the text? What’s the main idea for each part? Part I (Pa.1-3): Darwin and his research Part II (Pa.4-5): Mendel and his experiment. Part III (Pa.6): Turesson and his study. Part IV (Pa.7): The importance of the research of the three scientists. Careful reading (1) What did Darwin discover about bird species in Galapagos? Darwin found 13 kinds of finches, related to each other in the structure of their beaks, tails, shape of body and colors of their feathers. The most curious fact was the differences in the size of the beaks. Read and answer the questions in Ex1 on P35. (2) What did Mendel observe in his experiments with peas? In his experiments with peas, Mendel observed that many characteristics were passed on from one generation to the next, without influence by the environment. (3) Looking at wild plant species in Sweden, what did Turesson discover? Looking at wild plant species in Sweden, Turesson discovered that plants changed their appearance and adapted to the new environment if they were moved to the other type of habitat. (4) What were Darwin’s discoveries based on? Darwin’s discoveries were based on his observation in Galapagos.
Charles Darwin The wildlife of the Galapagos Isles Differences in habitat could lead to different species in birds as well as in plants. He had found the key to explaining differences between species. Careful reading Gregor Mendel Flowers and peas Many characteristics were passed on from one generation to the next, without influence by the environment. His research gave birth to the science of genetics. G?te Turesson A wild plant found on the Swedish west coast Found evidence for the existence of stable varieties within species in nature. He showed that differences between plants of one species occurred as a result of the environmental conditions in their habitat. Read the passage and find out the expressions from the text: 1.在某人年轻时 2.享有去做某事的自由 3.导致某人去做某事 4.值得特别关注 5.与---有联系 6.原打算做---用 in one’s youth enjoy the freedom to do lead sb. to do deserve special attention be related to be designed to do/ for sth. 1.流传 2.从一代到下一代 3.把---重现在视野 4.发现存在的证据 5.适应 pass on/ down from one generation to the next bring---back in view find evidence for the existence adapt/ adjust to Read the passage and find out the expressions from the text: | ||||||||||||||||||||||||||||||
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