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

4. What is the difference among them ? Natural clone Man-made clone clone

5. Natural clone is one that occurs in a natural form of cloning without human help. Man-made clone is one that produced through human intervention( 介入 ).

6. Dolly the sheep She was cloned while the others were born naturally. Dolly was a ______ sheep. cloned How does Dolly differ from other sheep?

7. Skim the following passage and match the paragraph with the correct sentence. Para 1 A. The problems of Dolly Para 2 B. The two major uses of cloning Para 3 C. The attitudes towards cloning Para 4 D. The definition of cloning Para 5 E. The effect of cloning in society

8. Cloning is a way of making an exact copy of another animal and plant. What is cloning ? It happens both in ______ and in_______. They can be cloned by ________ and _______. plants animals themselveshumans Natural cloneMan-made clone Para 1 The definition of cloning

9. 1.How many major uses do cloning have? Firstly, …commercial… Secondly, …research… 2. When was the cloning of Dolly the sheep born? Para 2 1996 The major uses and procedures of cloning

10. At first, the fact that Dolly developed ______ in a natural way was __________. Later, the news _____she lived for six years, half the length of the life of the ______ one was __________. Finally, the problem that occurred to the scientists was that a cloned animal lives _____________ the original one. Para 3 The problems of Dolly normally encouraging orginal that as long as / shorter than / longer than disturbing shorter than

11. The word “controversial” in paragraph 4 probably means ____________. A. complicated B. arguable C. important Para 4 The impact of Dolly

12. True or false: 1 People feared that Cloned Hitlers would do harm to the world.Hitlers 2 All the research into human beings will be forbidden. 3 Some countries will use cloning in a wise way. Para 5People’s reaction to cloning Many governments forbade reserch into human beings.

13. the author does not state any personal opinion about cloning. A. Objective (be fair) B. Negative (be against it) C. Positive (be in favor of it) The writer’s attitude towards cloning Because ____________________________ _____________________________________

14. The important events in animal cloning history

15. 2001 cloning cattle 2003 Cloning horse 2002 cloning rabbits 2002 cloning cats

16. 1. The main idea of the text is____. A. animal cloning is very valuable and can benefit the world. B. animal cloning is well developed because Dolly the sheep was born. C. animal cloning could be misused by bad people so it must be forbidden D. animal cloning raised arguments and scientists are not sure about its future.

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

18. 3. In the second paragraph, the word “straightforward” means ______. A.uncomplicated B.honest C.frank D.difficult

19. 4. We can infer from the last three paragraphs that ______. A.Dolly’s serious disease and final death disturbed the whole world. B.Dolly successfully cloned a new lamb with the help of cloning scientist C.the normal development of Dolly had no effect on the cloning of other species D.there were arguments about animal cloning and concerns about the future of cloning

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

21. 6.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

22. 7.The sheep that donated the somatic cell most probably lived ________years. A. 3 B. 6 C. 9 D. 13

23. 8. Which of the following is not an advantage of cloning? A.Cloning can be used for medicine purposes. B.Large quantities of food can be produced by cloning. C.Cloning can help keep animals from becoming extinct. D.Famous person who have passed away can be cloned.

24. NOT true 9.Which of the following statements about cloning is NOT true according to text? A. Cloning is something that has been developed quite recently. B. Twins that look exactly the same are originally from the same egg. C. Cloning is used by gardeners to make more money. D. Animal cloning is much more difficult than plant cloning.

25. 10.The cloning of Dolly the sheep succeeded because____. A. its easier to clone a sheep than other animals B. the scientists were determined and worked hard with patience C. the scientists were rewarded and got lots of money D. many other attempts to clone mammals failed The determination and patience of the scientists was rewarded/ paid off.

27. True of false : 1.Four female sheep participate in the cloning of a new sheep. 2.Electricity is needed in the procedure. 3.Sheep B provides a somatic cell for the clone. 4.The lamb is the exact copy of sheep A. (F)(F) （T）（T） （F）（F） (T)(T)

28. 5.Cloning means making a copy of an animal or a plant. 6.Gardeners can make a lot of money by cloning plants. ( ) 7.Cloning animals is as complicated as cloning plants. ( F ) 8.Dolly the sheep was the first successful clone of a mammal. ( ) 9.Natural clones happen in animals as well as in plants. ( ) （F）（F） T T T

29. Problems /dangers of cloning Advantages of cloning Animal clones may develop the illnesses of older animals. Medical cloning could produce cures for serious degenerative illnesses in humans. Animal clones may die younger than the donor animals. Cloning plants can produce plants of similar quality for sale. Evil leaders may want to clone themselves. Cloning plants can be useful for research on new plant species. There are moral objections to cloning human beings. Cloning can help save endangered animals. Fill in the chart using the information from the text.

30. Definition 2 major uses of cloning Cloning procedure The first successful animal clone It is a way of __________________ of another animal and plant. quantities of plants. 1)to produce ___________quantities of plants. 2)It is valuable for research on new ______________and medical research on ________. Cloning plants ______________while cloning of animals is ___________ The cloning of_______________, a _____________ in cloning tech. making an exact copy commercial straightforward breakthrough plants species animals Dolly the sheep complicated

31. 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.

32. Homework Write a short passage about the advantages and disadvantages of cloning. At the end of your passage,you can add your own opinion.