新人教版选修八-Unit-2-Cloning-Reading[课件]幻灯片

1、 In pairs, look at these pictures and discuss which ones are natural clones and which ones are man- made. Explain how they differ. Discussion A strawberry plant Growing new plants man-made clone Twins Dolly the sheep She was cloned while the others were born naturally. Dolly was a _ sheep. cloned Ho

2、w does Dolly differ from other sheep? man-made clone Reading Listen to the tape and find out the main idea of each paragraph. Cloning is a way of making an exact copy of another animal and plant. What is cloning ? It happens both in _ and in_. They can be cloned by _ and _. plants animals themselves

3、humans Natural cloneMan-made clone Para 1 The definition of cloning 1.How many major uses do cloning have? Firstly, commercial Secondly, research 2. When was the cloning of Dolly the sheep born? Para 2 1996 The major uses and procedures of cloning At first, the fact that Dolly developed _ in a natur

4、al way was _. Later, the news _she lived for six years, half the length of the life of the _ one was _. Finally, the problem that occurred to the scientists was that a cloned animal lives _ the original one. Para 3The problems of Dolly normally encouraging orginal that as long as / shorter than / lo

5、nger than disturbing shorter than The word “controversial” in para 4 probably means _. A. complicated B. arguable C. important Para 4 The impact of Dolly True or false: 1 People feared that Cloned Hitlers would do harm to the world. 2 All the research into human beings will be forbidden. 3 Some coun

6、tries will use cloning in a wise way. Para 5 Peoples reaction to cloning Many governments forbade reserch into human beings. the author does not state any personal opinion about cloning. A. Objective (be fair) B. Negative (be against it) C. Positive (be in favor of it) The writers attitude towards c

7、loning Because_ _ Fill in the chart on PageFill in the chart on Page 1 12 2 using the information from using the information from the text.the text. Which is easier to clone, plant or animal? Because cloning plants is straightforward , but the cloning of animals is very complicated. Discussion Homew

8、ork 1. Translate the procedure of cloning Dolly the sheep into Chinese. 2. Finish Ex.1,2,3, Page12. 1996 cloning sheeps 2001 cloning cattle 我国成功繁殖克隆兔我国成功繁殖克隆兔 体形要比普通兔大许多体形要比普通兔大许多 2002年年5月月 中旬成功地中旬成功地 繁殖了一只繁殖了一只 胚胎细胞克胚胎细胞克 隆兔。隆兔。 2002 cloning cats 第一只克隆宠物猫第一只克隆宠物猫克隆马及其克隆马及其“母母 亲兼姐姐亲兼姐姐” 2002年年4月十六月十六 日美国第一头日美国第一头 克隆牛克隆牛“艾米艾米” 产下牛犊喜作产下牛犊喜作 妈咪妈咪 2005 cloning dogs 克隆的荧光小猪克隆的荧光小猪(左左)和正常小猪和正常小猪(右右) A strawberry plant The new plants that grow from the runners are exact copies of the original plant. 一株草莓依靠它沿地一株草莓依靠它沿地“爬走爬走”的匍匐茎的匍匐茎,一一 年内就能长出数百株草莓苗年内就能长出数百株草莓苗 富贵竹插枝即活富贵竹插枝即活 The g