Unit 2 cloning

Cloning is a way of making an exact copy of another animal or plant. What is Cloning?

Is cloning a good thing or a bad thing?

Dolly the sheep It is the most famous sheep in the world. She was cloned while the others were born naturally. In other word, Dolly was a ______ sheep. cloned

Cloning: Where is it Leading us? Reading Cloning: Where is it Leading us?

Reading –Ⅰ Fast reading 3 mins Read for 1. Outline – key words for each paragraph Para. 1 Para. 2 Para. 3 Para. 4 Para. 5 a. Two major uses of cloning b. Definition(定义) of cloning c. Problems of Dolly d. People’s attitudes to cloning e. The impact of cloning 2. Main idea of the passage

main idea 2. What’s the main idea of the text? A. Animal cloning is very valuable and can benefit the world. B. Animal cloning could be misused by bad people so it must be forbidden C. Animal cloning is well developed because Dolly the sheep was born. D. Animal cloning raises arguments and scientists are not sure about its future.

Choose the right answer according to the text. Reading – II Skimming ( 5ms ) Choose the right answer according to the text. 1.Dolly the sheep_____. A. looked exactly like the sheep that provides the egg. B. was the exact copy of the sheep that provides the nucleus. C. looked like the sheep that gave birth to it. D. had the characteristics of all three sheep.

2. It can be inferred from the passage that a cloned animal_____. A 2. It can be inferred from the passage that a cloned animal_____. A. usually lives as long as the original one B. usually lives longer than the original one C. usually lives shorter than the original one D. is usually as healthy as the original one

3. Which of the following is not an advantage of cloning? Cloning can be used for medical purposes. Large quantities of food can be produced by cloning. Cloning can help keep animals from becoming extinct（灭绝）. Famous persons who have passed away can be cloned. 4. In the second paragraph, the word “straightforward” means ____. A. uncomplicated B. honest C. frank D.difficult

5. What about the writer’s attitude toward cloning in this passage? The writer is against cloning. The writer is in favor of cloning. The writer does not state any personal opinion about cloning. D. The writer is in agreement with cloning.

Reading – Ⅲ Scanning (3mins) Look at the picture, and write “True” or “false” : Three 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 sheep A. F T T B F

Reading – Ⅳ Detailed-reading (5ms) Read paragraph 3-5 and fill in the blanks The problems of Dolly the sheep Encouraging news : It seemed to develop ________. Disturbing news: It lived for ____ and a half years, half the length of the life of the _______ sheep. normally six original

and even to produce _____________. The effect of Dolly the sheep Its appearance raised a storm of ________ and had a great impact on the _____ and public___________. It opened everybody’s eyes to the possibility of using cloning to cure _______________ and even to produce _____________. objections media imagination serious illnesses human beings

Evil leaders hope to clone_________. Arguments on cloning Evil leaders hope to clone_________. Religious leaders raised ________ questions. Many governments _______ research into human cloning. Some countries continued to _______ evidence of the abundant medical aid. themselves moral forbade accumulate

Step Ⅲ Summary:高考链接—语法填空 an Cloning is a way of making 1____ exact copy of another animal or plant. Cloning plants is straightforward 2_______ cloning animals is very complicated, which is very hard 3_____________(undertake). But the scientists made a(n) 4_____________(break)　in 1996, with the successful cloning of Dolly. However, Dolly became seriously ill, 5________ made the cloning scientists cast down. Altogether，Dolly lived six and a half years. Sadly, the same arbitrary fate 6__________(affect)other species. while to undertake breakthrough which affected

And scientists were concerned about making corrections in their research procedure. A storm of objections was raised by Dolly’s appearance, which had a great impact 7____ the media. And some governments became nervous and more conservative　and began to 8_______(reform) their legal system and forbade research into human cloning, while other countries continued to accumulate evidence of the 9___________ (abundance) medical aid that cloning could provide. 10_________, it still remains to be found by the scientists whether cloning will help or harm human beings. on reform abundant However

Is cloning a good thing or a bad thing? Step Ⅳ Discussion Discuss the following question with you group members. Is cloning a good thing or a bad thing? Give your opinion and speak out the reasons

Useful patterns （用下列模版陈述你的看法。） Team A: I would like to suggest that ＿＿＿＿______________________.　On the one hand,　________________. On the other hand,＿＿＿　____________. So in my opinion, cloning is good. . Team B: I think cloning is a bad thing. Firstly, from the passage we know　that__________________＿＿＿＿＿＿＿＿. Secondly,________________＿＿＿＿． Thirdly,___________________. So I think the research into human cloning should be forbidden .

Do you still want to be cloned?

Homework Write a short passage about human cloning Thank you

Thank you for listening Good bye!

Team A: I would like to suggest that cloning is good Team A: I would like to suggest that cloning is good. On the one hand, cloning can be used to cure serious illnesses. On the other hand, cloning can help keep animals from becoming extinct, such as panda and Chinese tiger(华南虎). So in my opinion, cloning is good. Team B: I think cloning is a bad thing. Firstly, from the passage we know that Dolly lived shorter than the original sheep. Secondly, some evil leaders would like to clone themselves, which will do great harm to us. Thirdly, cloning will develop the illnesses of the older one. So I think the research into human cloning should be forbidden.