M5U3Welcome公开课.pptx

Look at these pictures,can you find the differences between the above animals and normal ones?cloned cloned cloned cloned I.Task:read the passage about cloning on page 58 and answer the following questions.1.What is cloning technology?2.What are people worried about when it comes to cloning?.ReadingAbout cloningCloning is the act of creating a copy of an existing species(种种类类).It can be done with all forms of life,including human beings.The idea of cloning is an old one,starting with Hans Speman in the early 20th century.His reasearch on growth and differentiation（分分化化）of cells led to his winning the Nobel Prize in 1935.Cloning is a new technology which many people are worried about.Most developed countries and even the UN have placed a ban on human cloning.They think that more animal cloning should be done and monitored(监控监控)before moving onto cloning humans.There could be some advantages to the cloning technology,For example,if you have some serious damage,it is possible to repair that damage using your own cells and DNA which are cloned from the healthy part of your brain.The worlds first cloned mammalIt was created by Scottish scientists.It caused worldwide interest because she looks the same as her mother,both in appearance and in genes.II.Picture-talkingPicture 1The first cloned mammal Dolly and Its Creator-Ian WilmutHaw long did Dolly live?Dolly died of lung disease at an early age.Its existence was also controversial(有争议的).Some people believe that cloning can help cure many diseases and save a lot of lives.However,others think cloning is dangerous both technologically and ethically(伦理上的).The kitten in the picture is called CC.Its name is from“Copycat”.It was born in December 2002.Picture 2The researchers in Texas produced CC with a cell taken from her mother Rainbow.CC was a healthy kitten who grew into a lively affectionate fek()nt house cat.She is not the exact copy of her clone-mother because they grew up in different surroundings,though the shared the same genes.These female pigs are also cloned.They were born on Christmas Day 2001.They were Noel,Angel,Star,Joy and Mary.Picture 3Although they are not the first cloned pigs,they are actually the first to be engineered in a way that their organs more suitable for transplantation into humans.Due to the shortage of human organs for transplants,many people are dying because some of their organs do not work.It is hoped that the organs from these pigs will be used in humans bodies.The name of the first cloned monkey is ANDi.It is from“inserted DNA”spelt backwards.The playful coffee-coloured monkey was born in 2000.The technology is different from thatused for Dolly.Picture 4Researchers in Oregon,the USA created this first genetically modified monkey by putting a gene form a jellyfish,another species,into six-day-old monkey embryos(胚胎胚胎).The pair of calves kvz were born on 5 July 1998 in Ishikawa,Japan.They were two years younger than Dolly,being second adult animal clones in the world.More examples about cloned animalsThe mule in the picture is the worlds first cloned mule.It was born on 4 May 2003.His name is Idaho Gem.In 1962,the scientist Gurdon from Cambridge cloned a tadpole tdpl In 1963,Chinese scientist Tong Dizhou cloned a carp kp,which was 33 years earlier than Dolly.Born in 2005 in Seoul University in KoreaSnoopyDo you think it would be a good idea to clone humans some day?Why or why not?III.DebateIt is a good idea,forreasons:1.Cloning can help cure many diseases and save a lot of peoples lives.2.3.Party AIt is a bad idea,forreasons:1.Cloning can lead to ethical(伦理伦理)problems.2.3.Party BIf possible,do you want another person to be exactly the same as you?Just imagineJust imagineSupposing you are facing your second self who looks like you,talks like you and thinks like you,how do you feel?One man,one world?Funny picturesFunny picturesIf cloning goes in a wrong direction,what will happen?A dog or an eagle?A dog or an eagle?A duck or a crocodileA duck or a crocodile krkdal krkdal?A cock or a dog?A cock or a dog?A lion or a kangarooA lion or a kangaroo ,kgru ,kgru?A frog or a crocodileA frog or a crocodile krkdal krkdal?A tortoise or a bear?A bird or a dog?A bird or a dog?A dog or a man?Who is this?克隆如何才能和谐？克隆如何才能和谐？Think about what weve just learnt today.Study without reflection is a waste of time.After the classIts time to stop the class for you to look back in silence.HomeworkWrite a short passage about whether it is a good idea to clone humans.Today our class had a discussion about whether it is a good idea to clone humans.Some students think that it is good,for However,some other students think it is not a good idea,forIn my opinion,