《单元Reading》PPT课件.ppt

Unit 2 Cloning Warming up & Reading,Natural clone is one that occurs in a natural form of cloning without human help.,Man-made clone is one that is produced through human intervention(介入) .,Warming up,Two kinds of clones:,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,The new plants that grow from the runners are exact copies of the original plant.,Natural clone,Growing new plants,Man-made clone,富贵竹插枝即活,The gardener cuts the plant ,and then the cutting produces another new plant.,Man-made clone,Twins,They are born naturally and identical in sex and appearance.,Natural clone,She was cloned while the others were born naturally. Dolly was a _ sheep.,cloned,How does Dolly differ from other sheep?,Man-made clone,In 1996, a sheep called Dolly was born. It is the first mammal to be cloned. It is considered to be the greatest success in the development of cloning.,Dolly and its creator,The following are some photos about cloning. See how much you know about it.,2001 cloning cattle,2003 Cloning horse,cloning rabbits,2002 cloning cats,2005 cloning dogs,克隆的荧光小猪(左)和正常小猪(右),2002年4月16日美国第一头克隆牛“艾米”产下牛犊喜作妈咪。,cloning,Reading,Where is it leading us?,Book 8 unit 2,Skimming,Please read the passage quickly and get the main idea, and then finish the following exercises in groups.,The main idea of the text is_ A. animal cloning is very valuable and can benefit the world. B. animal cloning could be misused by bad people so it must be forbidden C. animal cloning is well developed because Dolly the sheep was born. D. animal cloning raised arguments and scientists are not sure about its future.,主旨大意,2. The cloning of Dolly the sheep succeeded because_. A. its easier to clone a sheep than other animals B. the scientists were determined and worked hard with patience C. the scientists were rewarded and got lots of money D. many other attempts to clone mammals failed,B,细枝末节,3. What is peoples fear about human cloning. Which of the following is wrong? A. Cloned Hitlers would do harm to the world. B. Cloned people may be killed at will for medical aid. C. A woman would have difficulty recognizing her real husband. D. Men will die out because a woman can give birth to a baby without a husband.,4. The sheep that donated the somatic cell most probably lived _ years. A. 3 B. 6 C. 9 D. 13,推理判断,5. We can infer from the last three paragraphs that _. The normal development of Dolly had no effect on the cloning of other species. B. Dollys serious disease and final death disturbed the whole world. C. There were arguments about animal cloning and concerns about the future of cloning. D. Dolly successfully cloned a new lamb with the help of cloning scientists.,Reading,Listen to the tape and find out the main idea of each paragraph.,The main idea of each paragraph.,a way of making an exact copy of another animal and plant.,problems,two major,effect,1.Cloning is _,2.Cloning has _ uses.,3.The _ of Dolly.,4. The _ of Dolly.,5. Peoples to cloning.,reaction,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,humans,Natural clone,Man-made clone,Para 1,The definition of cloning,Firstly, commercial Secondly, research,Para 2,The major uses and procedures of cloning,In this paragraph, the word “straightforward” means _. A. uncomplicated B. honest C. frank D. difficult,At first, the fact that Dolly developed _ in a natural way was _. Later, the news _Dolly had become seriously ill was _. Finally, the problem that occurred to the scientists was that a cloned animal lives _ the original one.,Para 3,The problems of Dolly,normally,encouraging,that,as long as / shorter than / longer than,disturbing,shorter than,The word “controversial” in para 4 probably means :_. A. complicated B. arguable C. important D. traditional,Para 4,The impact of Dolly,Its appearance raised _ and the media and public imagination.,a storm of objections,had a great impact on,True or false: People feared that Cloned Hitlers would do harm to the world. 2 All the research into human beings will be forbidden. 3 Some countries will use cloning in a wise way.,Para 5,Peoples reaction to cloning,Many governments forbade research 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 cloning,Because_,Intensive Reading,Fill in the chart about the advantages and disadvantages of cloning.,Collecting information,Cloning is beneficial to,It can make more profits for,We could use cloning to cure,Cloning can help save,Cloning can provide a copy of a child for a couple,Animals clones get ill and,Against nature,Animals clones may develop the illness of,Evil leaders may want to,People are afraid that scientists will create thousands of copies of the same person.,gardeners and farmers,endangered animals,whose child has died,die young,older animals,clone themselves,illness,humans,Practice activity: Debate Are you in favor of cloning or against cloning? State your point of view