5. The sheep that donated the somatic cell most probably lived ____ years. A. 3 B. 6 C. 9 D. 12
Careful reading
Read the letter again, then try to find the main idea of each paragraph. a way of making an exact copy of 1.Cloning is ______________________________ another animal and plant. 2.Cloning has ____________ uses. two major
problems 3.The _________ of Dolly.
effect 4. The ________ of Dolly.
forbidden 5. It is __________ to clone human beings.
Problems or dangers of cloning

4. There are moral objections to cloning human beings.
Advantages of cloning
1.Medical cloning could produce cures for serious illnesses in humans. 2. Cloning plants can produce plants of similar quality for sale.
2.Gardeners can make a lot of money by cloning plants. T 3.Cloning animals is as complicated as cloning plants. F
4. Dolly the sheep was the first successful clone of a mammal T 5.Natural clones happen in animals as well as in plants. T
3. Cloning plants can be useful for research on new plant species. 4. Cloning can help save endangered animals.
意大利狂人医生: 安蒂诺里
冒死也要克隆人的 科学家:布瓦瑟利耶
Thinking
Dolly the sheep and its baby
Cloned rabbit
克隆的荧光小猪(左)和正常小猪(右)
克隆马及其“母亲兼姐姐”
ቤተ መጻሕፍቲ ባይዱ
Reading – I Scanning
Write the letter “T”if the statement is true. Write “F”if it is false. 1.Cloning means making a copy of an animal or F a plant.
Cloning people is a good thing ,or a
bad thing?
克隆人是福音, 还是恶兆？
Homework:
What happens next?
Reading
1. 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. Cloning is used by gardeners to make more
money.
D. Animal cloning is much more difficult than
plant cloning.
3. 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
4. The lamb is the clone of the cell from sheep because_____. A. it provides the egg cell B. it gives birth to the lamb C. it provides the nucleus D. it is a female sheep
1. Animal clones may develop the illnesses of older animals. 2. Animal clones may die younger than the donor animals.
3. Evil leaders may want to clone themselves.
C. usually lives shorter than the original one
D. is usually as healthy as the original one
2. Which statement is NOT true ? A. Cloning is something that has been developed quite recently. B. Twins that look exactly the same are originally from the same egg.