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1、Look at the following pictures and answer the questions: Its the most famous sheep in the world. Do you know how Dolly is different from other sheep?Warming up ( 5ms ) She was cloned while the others were born naturally. It is the copy of another sheep. 2. What is cloning? Cloning is a way of making

2、 an exact copy of another animal or plant.3. Are the following clones the same? If not, what is the difference?Natural clone Man-made clone Is it natural clone or man-made clone? strawberryidentical dogsNatural clone Man-made cactustwinsMan-made cloning examples cactusstrawberry twinspendulum orchid

3、(吊蘭吊蘭)natural cloning examples 1.Cloning means making a copy of an animal or a plant.2.Gardeners can make a lot of money by cloning plants.3.Cloning animals is as complicated as cloning plants. XXQuiz:4. Dolly the sheep was the first successful clone of a mammal5.Natural clones happen in animals as

4、will as in plants.Step 3: Prediction What do you think the article is about by reading this headline?A.Cloning. B.Dolly the sheep . C.It will lead us to some places.STEP 4: SCANNING _.Cloning has two major uses._.Cloning is a way of making an exact copy of another animal and plant_. The effect of Do

5、lly._. It is forbidden to clone human beings._.The problems of Dolly.123451.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

6、sheep. Reading II Skimming ( 5ms )Choose the right answer according to the text.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 DIES EARLIER THAN THE ORIGINAL ONE D. IS USUALLY AS HEAL

7、THY AS THE ORIGINAL ONE3. Which of the following is not an advantage of cloning?A.Cloning can be used for medical purposes. B.Large quantities of food can be produced by cloning.C.Cloning can help keep animals from becoming extinct.D.Famous persons who have passed away can be cloned.4. What is peopl

8、es fear about human cloning? Which of the following is wrong?A.Cloned Hitlers would do harm to the world.B.Cloned people may be killed at will for medical aid.C.A woman would have difficulty recognizing her real husband.D.Men will die out because a woman can give birth to a baby without a husband.RE

9、ADING III DETAIL READING ( 8MS )FILL IN THE CHART USING THE INFORMATION FROM THE TEXT.Problems or dangers of cloningAdvantages of cloningAnimals may_ _ of older animals.Medical cloning could _ _ for serious degenerative(變質(zhì)變質(zhì)的）的）_ in humans. developtheillnessesproducecuresillnessesAnimal clones may _

10、 _ than the donor animalsCloning plants can _ _ of similar _ _ _ ._ _ may want to clone themselves.Cloning plants can be _ for research on _ _ _ .There are _ _ to cloning human beings.Cloning can help save _ _ .dieyoungerproduceplantsquality forsaleleaderusefulEvil plantspeciesmoralobjectionsendange

11、redanimalsnewA. Expositive. B. Descriptive. C. Argumentative.Is cloning good or bad for us ?Advantages Disadvantages Group 1 and 2 Group 3 and 4Mini-DebateProblemsAnimal clones may develop the illness of older animals.Animal clones may die younger than the donor animals.Evil leaders may want to clon

12、e themselves.There are moral objections to cloning human beings.AdvantagesMedical cloning could produce cures for serious illness in humans.Cloning plants can produce plants of similar quality for sale.Cloning plants can be useful for research on new plant species.Cloning can help save endangered an

13、imals.Exercise :Reproductive cloning is intended to produce a c_ of an existing a_ or a plant. Reproductive cloning of animals is a _for technology and farming as well as for cloning e_ animals. But reproductive cloning of human beings is specifically f_ by law in most c_ . opynimalndangeredllowedor

14、biddenountriesTherapeutic (治療的治療的) cloning is to produce a healthy copy of a s_ persons tissue (肌肌肉組織肉組織) or organ for transplant in order to save the lives of those who would d_ without it. This t_ would be many times better than r_ on organ transplants from other people. The tissue or organ would

15、have the sick persons original DNA.ickieechniqueelyingHomework Finish off Ex.1, 2, 3, Page13.8. The sheep that donated the somatic cell most probably lived _ years. A. 3 B. 6 C. 9 D. 12推理判斷推理判斷11. In the second paragraph, the word “straightforward” means _.A. uncomplicated B. honest C. frank D. diff

16、icult12. We can infer from the last three paragraphs that _.A. The normal development of Dolly had no effect on the cloning of other species.B. Dollys serious disease and final death disturbed the whole world.C. Dolly successfully cloned a new lamb with the help of cloning scientists.D. There were a

17、rguments about animals about animal cloning and concerns about the future of cloning.13. What about the writers attitude toward cloning in this passage?A. The writer is against cloning.B. The writer is in favor of cloning.C. The writer does not state any personal opinion about cloning.A. The writer

18、is in agreement with cloning.Questions:1.Do you support the idea of producing human embryos(胚胎胚胎)for medical purposes?Why?2.Do you think it a good idea to use cloned humans for organ(器器官官)transplants? Why?3.Do you think a cloned human should have human rights? Why?4.Do you think cloned humans will have the same talents as the original ones? Why?