1、欢迎来到英语课堂Sheep A was created in a laboratory by scientists.It is a cloned sheep or clone.Sheep B is the“parent”of sheep A.Scientists used the genes of Sheep B to create Sheep A.Both sheep have identical genes their genes are exactly the sarae.A genethe part of a cell that controls how it develops1.Wh
2、o do we get our genes from?2.How many parents does a cloned animal have?3.Where are cloned animals created?4.In what way are Sheep A and Sheep B identical?They have identical genes,and so are identical in every way Answer the questions about the words and phrases in the box.to be against(cloning)arg
3、umentbeneficial to be for(cloning)nature1.If you are for something,do you think it is a good idea?2.If you are against something,do you think it is a good idea?3.Do you often have arguments with people,in which you disagree about something?What kind of things do you argue about?4.Do you think nature
4、 should be left alone,or is it better to make plants and animals the way we want them?5.Do you think cloning may be beneficial/helpful to humans?Give at least one reason.Say which of the arguments below are for cloning and which are against cloning.1.Cloning is against nature.2.Cloning will be benef
5、icial to humans.For example,if a couple cant have children,cloning could help give them a child.3.Cloned animals get ill and die quite young.4.People are afraid that scientists will create thousands of copies of the same person.5.Cloning is dangerous because scientists may create monsters by mistake
6、.6.We could use cloning to cure illnesses.Correct the wrong information in these sentences.1.Dr Hugh Donaville works for a company that has already cloned a number of people.2.A sheep called Dolly was cloned in 1998.3.Dolly the sheep died in 2003.animals19974.Donaville thinks scientists treated Doll
7、y the sheep as a product.5.Donaville says that if a child is very ill,scientists could clone it.The presenterdies6.Donaville thinks its a good idea to have thousands of copies of the same person.7.Donaville says that we could clone animals that have become extinct.terribleare becoming extinctPresent
8、er:Our topic for this week is cloning.To discuss it,we have with us Dr Hugh Donaville,head of a company that has already cloned a number of animals.Hugh D:Good morning.Presenter:Dr Donaville,could you begin with a simple explanation of cloning?Hugh D:Certainly.Cloned animals are created in a laborat
9、ory.They take all their genes from a single parent.Presenter:So cloned animals come from one parent only.Hugh D:Precisely.Presenter:How successful has cloning been so far?Hugh D:Well,as most people know,in 1997 scientists cloned a sheep calledDolly.Since then,scientists have cloned animals such as p
10、igs and cats.Presenter:You make cloning sound easy.Hugh D:Do I?I wish it was.If it was easy,Id be a very rich man by now.Presenter:So what are the difficulties?Hugh D:Unfortunately,cloned animals get ill and die quite young.For example,Dolly the sheep died in 2003.She shouldhave lived longer.Present
11、er:Why do they get ill?Hugh D:Weve got a few ideas but wedont really understand why yet.Presenter:I see.Now obviously,Dr Donaville,you believe that cloning will be beneficial to human beings.Hugh D:Yes,I do.If I didnt believe that,Id be in a different job.Presenter:Many people believe that cloning i
12、s wrong and against nature.How do you answer them?Hugh D:I tell them that cloning is a way of helping nature.Presenter:But cloning treats animals and people as things,as products.Hugh D:Nonsense!I dont think thats true at all.I dont think scientists treated Dolly the sheep as a product.She was ashee
13、p!Presenter:Im not sure everyone believes that.Also,people are afraid that scientists will create thousands of copies of the same person.Hugh D:I agree,if that happened,it would be terrible.We need laws to prevent that.Presenter:Im glad you agree about that.But why do scientists want to clone humans
14、?I cant see any good reasons for this.Hugh D:On the contrary,there are very good reasons.For example,if a couple cant have children,then cloning can give them a child.And if a child dies,we could clone it.Presenter:Create an identical copy,you mean?I think thats a terrible idea.Hugh D:A clone can ne
15、ver be an identical copy of another person.Its not just your genes that create who you are.Its your family and society as well.Presenter:True.Hugh D:To continue,we could clone animals that are becoming extinct.Presenter:Yes,if we were able to do that,it would be wonderful.I can see there are many arguments both for and against cloning.
