大学英语听说教程第三册UNIT

1、Unit 8,Troubling over Genetic Doubling,Listening：listen and understand the main idea of the passage Speaking: be able to retell the main idea of the passage or the story.,Leading-in,Intensive Listening Practice,Supplementary Listening,Extensive Listening Practice,Leading-in: Some information about a

2、nimal cloning,Dolly (a cloned sheep),On July 5th, 1996, the 1st cloned mammal Dolly was born in Britain.,Cloned Pigs were born.,In 1998, fifty cloned mice were born in Hawaii in the US.,In 1998, a cloned ox was born.,On Jan.13,2000, the 1st cloned monkeyTetra was born in the US.,Leading-in: Listenin

3、g and Speaking on Page 123,Now you will hear a passage. Take notes while listening and then use your notes to finish the tasks. Task 1: Fill in the following table according to what you hear.,Reasons for cloning,Reasons against cloning,1. It allows people to live longer.,2. It gives children to infe

4、rtile couples.,1. It is expensive,2. It is inefficient.,3. It can create a race of people to compete with ordinary humans.,More questions on details,Listen to the passage again and answer the following questions. How do some people view human cloning? What will happen if governments invest more mone

5、y in cloning human? What will be the result of failed attempts at human cloning?,Leading-inAre you for or against human cloning? List at least three reasons.,fight fatal diseases save dying relatives help infertile people have children create genius extend human life create new immune systems (免疫系统)

6、 grow organs and tissues for transplant surgery (移植手术),deny human rights reduce variety of human gene pool unsafe birth defects a shorter life religious objections psychological harms degrade the quality of parenting and family life,Extensive Listening Practice: Short Conversations on Page 115,1. 2.

7、 3. 4. 5. 6. 7. 8. 9. 10.,Keys: B D C A A A C C A B,Intensive Listening Practice: Long Conversations on Page 115,1st listening: Listen to the conversation carefully and choose the best answer. Q1. Q2. Q3. Q4. Q5. Q1.What are the speakers talking about? Q2. What is the relationship between the two sp

8、eakers? Q3.Why must a position be decided upon right away? Q4. How does the woman feel about the man? Q5. How does the man feel about infertile couples?,2nd listening: Listen to the conversation again and take some notes concerning the questions (Including the main idea, their relationship, the task

9、 the man assigned to the woman, the mans position, etc). Retell it to the class.,Script,M: Have you finished the draft I ordered? W: You mean the document that will spell out our position on human cloning? Can you wait another day or two for it? Im still having problems determining what our position

10、 should be. M: Im afraid this cant wait. We need to get our position out immediately to doctors and potential parents who need some sort of authoritative advice. W: Maybe itd help if we talked this out together. M: Fine. What questions do you have? W: Id like to know what you feel about this issue p

11、ersonally. As the head of this committee, you should have the greatest say in our stance.,M: Fine. I feel that cloning is completely ethical and should be advanced as a top priority of medicine. W: Why? M: Im extremely concerned about parents who are unable to have children naturally. Cloning would

12、allow these parents to have children even if they were infertile. W: Anything else? M: Thats it for now. Write this up quickly and have it on my desk before you leave for the day.,Intensive Listening Practice: Passage on Page 116,1st listening: Listen to the passage carefully and choose the best ans

13、wer. Q1. Q2. Q3. Q4. Q5. Q1. According to the passage, which of the following has NOT been cloned? Q2. How do cloned animals compare with normally reproduced animals? Q3. When did Massachusetts researchers say they were trying to clone people? Q4. How do people of the National Academy of Sciences fe

14、el about cloning? Q5. What was discovered about the announcement made by South Korean scientists?,Spot Dication,2nd and 3rd listening: Listen to the passage carefully and fill in the blanks. Dolly, the cloned sheep, was the biggest news story of 1996. Since then rodents, cattle, pigs and other anima

15、ls have, like Dolly, also been cloned from adult animals. these successes, producing cloned mammals is difficult, with most attempts failure. Cloning succeeds four percent of the time in species that have already been successfully cloned. In addition, some studies have that cloned animals are than n

16、ormally reproduced animals.,Despite,enormously,ending in,indicated,less healthy,In 2001, researchers in Massachusetts announced that they were trying to clone humans to extract stem cells. The National Academy of Sciences, while announcing support for such so-called therapeutic or research cloning i

17、n 2001, announced they the cloning of humans for purposes in 2002. They said it was unsafe. Ethicists, religious and political leaders, and others have called for a on human cloning for any purpose. They were especially worried when South Korean scientists announced in 2004 that they had cloned 30 human embryos. However, an investigation in 2005 that the data ha