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1、warming up and reading If you come across a man who looks the same as you, what will you do?1.came up to shake hands and have a hug2.walk on pretending to see nothing.As one of the greatest scientific and technological inventions in the 20th century, it is changing our life.1. What is a clone?A clon
2、e is an animal or a plant produced naturally or artificially from the cells of another animal or plant and is exactly the same as it.2. What can be cloned and how many kinds of clone do you know?Both plants and animals can be cloned.There are two kinds of cloning: natural clone and man-made clone Cl
3、one? Natural cloneMan-made cloneNatural clone is one that occurs from the “parent ” in a natural form of cloning without human help. Man-made clone is one produced through human intervention(介入) .In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-made.
4、Explain how they differ.Warming upDolly and the Father of Dolly Ian Wilmut( 伊恩威尔姆) 1996Dolly & her daughterTwinsThey are born naturally and identical in sex and appearance.Natural cloneA strawberry plantThe new plants that grow from the runners are exact copies of the original plant.Natural clone一株草
5、莓依靠它沿地“爬走”的匍匐茎,一年内就能长出数百株草莓苗。富贵竹插枝即活The gardener should cut the plant, then the cutting produce another new plant.Natural clone2001 cloning cattleMan-made clone2002 cloning catsMan-made clone1. What is the main topic?A. Cloning. B. Dolly the sheep . C. It will lead us to some places.2. What is the w
6、riting style?A. Expositive(说明性的). B. Descriptive. C. Argumentative(议论性的).D. narrative A A Learning tips: The passage is written in the expositive style. That is to say the text is in the third person and in factual and formal language. It gives different points of view and does not try to persuade t
7、he reader to make up his/her own mind.Careful reading The main idea of each paragraph.1.Cloning is _ 2. Cloning has _ uses.3. The _ of Dolly.4. The _ of cloning in society.5. The towards cloning.a way of making an exact copy of another animal and plant.problemstwo majoreffectattitudesIt happens both
8、 in _ and in _. They can be cloned by _ and _.plantsanimalsthemselveshumansNatural cloneMan-made clonePara 1: The definition of cloning1. How many major uses do cloning have?Firstly, commercialSecondly, research2Para 2: The major uses and procedures of cloning2.In the second paragraph, the word “str
9、aightforward” means _. A. uncomplicated B. honest C. frank D. difficultAbout Dolly the sheepEncouraging news: Dolly developed _. Disturbing news:normally Dolly lived for six and a half years, half the length of the life of the original one. Para 3: The problems of DollyThe word “controversial” in Pa
10、ra 4 probably means _.A. complicatedB. arguableC. importantPara 4: The impact of DollyB 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 countries will use cloning in a wise way.Para 5: Peoples reaction to
11、 cloningMany governments forbade research into human beings.T T F 1. We can infer from the last three paragraphs that _.A. 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. Dolly successfully cloned a
12、new lamb with the help of cloning scientists.D. there were arguments about animal cloning and concerns about the future of cloning.D Comprehending 2. It can be inferred from the passage that a cloned animal.A.usually lives as long as the original oneB. usually lives longer than the original oneC. us
13、ually dies earlier than the original oneD. is usually as healthy as the original one3. What about the writers attitude toward cloning in this passage? A. against B. positive C. neutral DiscussionWhats your opinion of cloning? Give reasons.As a coin has two sides, everything has two aspects. First, if the cloning is used in a correct way it can bring many conveniences to us. Such as: curing serious illnesses and being used to produce commercial qualities of plants. On the other hand, if the cloning is used in an evil way it can cause much troubles: such as moral questions.
