资源描述
单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,cloning,Unit2,1/38,Top10 inventions in 20th century:,2/38,NO.10,atomic bomb,3/38,NO.9,space shuttle,4/38,NO.8,television,5/38,NO.7,artificial satellite,6/38,NO.6,aspirin,7/38,Airliner,NO.5,8/38,NO.4,personal computer,9/38,NO.3,Mobilephone,10/38,NO.2,internet,11/38,NO.1,cloning,12/38,How much do you know about cloning?,13/38,Are they clones?,14/38,natural clone,man-made clone,clone,15/38,Natural clone,is one that occurs from the“parent”in a natural form of cloning without human help.,Man-made clone,is one that produced through human intervention(介入).,16/38,cactuskkts,pendulum orchid,pendjlm kd,natural cloning examples,17/38,strawberry,twins,natural cloning examples,18/38,man-made cloning examples,the first cloned cat,19/38,The important events in animal cloning history,20/38,In 1952 tadpole was cloned.It is the first animal to be cloned,21/38,In 1963,an Asian carp(鲤鱼）was cloned.Ten years later,a Chinese scientist named Tong di zhou cloned a European carp.,22/38,In 1996,a sheep called Dolley was born.It is the first mammal to be cloned.It is considered to be the greatest success in the development of cloning,.,23/38,A macaque（猕猴）was cloned in.Later scientists cloned many monkeys.It can be used to test out some diseases such as diabetes(糖尿病）,24/38,Mules(骡子）have no ability to give birth to a baby.A mule was cloned in.It is the first animal which lack fecundity(生育能力）to be cloned.,25/38,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,.,Man-made clone,26/38,Reading,Task 1,Read the passage and find out the main idea of each paragraph,27/38,Para.1,Para.2,Para.3,Para.4,Para.5,Cloning is a way of making an exact copy of another animal and plant.,Cloning has two major uses.,The problems of Dolly.,The effect of Dolly,It is forbidden to clone human being.,28/38,Task 2 Detailed Reading,Read the paragraph 2 and answer the two questions.,What are the two major uses of cloning?,Why is it easier to make commercial plant clones than animal clones?,Firstly,gardeners use it all the time to produce commercial quantities of plants.,Secondly,it is valuable for research on new plant species and for medical research on animals,.,Cloning plants is straightforward while cloning animals is very complicated,29/38,Reading,Task 3,Read the 9 sentences below the picture and get familiar with the procedure of cloning,Four female sheep participate in the cloning of a new sheep.,Electricity is needed in the procedure.,Sheep B provides a somatic cell for the clone.,The lamb is the exact copy of the sheep which provides egg cell.,F,T,F,T,30/38,Task 4,Read paragraph 3,try to get some information about Dolly the sheep after your reading,then answer the questions on the screen with your book closed,1.What was the first clone from an adult animal?,2.At what age did this clone die?,3.Did she develop the illness of older animals?,4.Which one can live longer,clone ones or ordinary ones?,Dolly the sheep,She was six and a half years old,Yes,she became seriouly ill.,Ordinary ones.,31/38,Go through paragraph four and five,try to find out the advantages and disadvantages of cloning,Comprehending,32/38,Advantages,using cloning to cure serious illnesses,help save endangered animals,produce plants of similar quality for sale,cloning plants can be useful for research on new plant species,33/38,Disadvantages,evil leaders hoping to clone themselves,religious leaders raised moral questions,animal clones may develop the illness of older animals,animal clones may die younger than donor animals,34/38,Advantages,cloning,Disadvantages,using cloning to cure serious illnesses,1,help save endangered animals,produce plants of similar quality for sale,2,3,evil leaders hoping to clone themselves to,attain,their ambitions,1,2,religious leaders raised,moral,questions,3,animal clones may develop the illness of older animals,4,4,Express your ideas,Are you,in favor of,cloning or,against,cloning?State your point of view on it.,35/38,As a coin has two sides,everything has two aspects.,On one hand,if cloning is used in a correct way it can bring many convenience to us.,On the other hand,if cloning is used in an evil way it can cause much trouble.,Therefore,we should use cloning in a correct way.,36/38,Consolidation,Clone is a way of making an exact_ of another animal or plant.Cloning have two _ uses.Firstly,gardeners use it all the time to produce _quantities.Secondly,it is valuable for research on new plant _and for medical research on animals.But through,the _and death of Dolly,cloning has a lot of problems.On the other hand,we know cloning is controversial in some countries for _and _reasons.,copy,major,commercial,species,birth,moral,religious,37/38,Homework,38/38,
展开阅读全文
浙ICP备2021020529号-1 | 浙B2-20240490 
