Dolly是世界上第一例用体细胞乳腺上皮细胞.ppt

第一只克隆猫 the first cloned cat 1.What is the main topic? A.Cloning. B.Dolly the sheep . C.It will lead us to some places. 2.What is the writing style? A. Expositive. B. Descriptive. C. Argumentative. 3. The main idea of the text is____ 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 raised arguments and scientists are not sure about its future. 4. It can be inferred from the passage that a cloned animal_____.A. usually lives as long as the original oneB. usually lives longer than the original oneC. usually lives shorter than the original oneD. is usually as healthy as the original one 5. The cloning of Dolly the sheep succeeded because____. A. it’s 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 6. 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. People can clone themselves at will. 3. The main idea of the text is____ 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 raised arguments and scientists are not sure about its future. 4. It can be inferred from the passage that a cloned anim