高中英语_Unit2《Cloning》课件-using_language_新人教版选修8.ppt

1981年:科学家进行克隆鼠实验,据称用鼠胚胎细胞培育出了正常的鼠。 1984年:第一只胚胎克隆羊诞生。 1997年2月24日:英国罗斯林研究所宣布克隆羊培育成功。科学家用取自一只6岁成年羊的乳腺细胞培育成功一只克隆羊。 1998年7月22日:科学家采用一种新克隆技术,用成年鼠的体细胞成功地培育出了第三代共50多只克隆鼠,这是人类第一次用克隆动物克隆出克隆动物。 1999年5月31日:美国夏威夷大学的科学家,利用成年体细胞克隆出第一只雄性老鼠。 2000年1月:美国科学家宣布克隆猴成功,这只恒河猴被命名“泰特拉”。 2000年3月14日:曾参与克隆小羊“多利”的英国PPL公司宣布,他们成功培育出5头克隆猪。 The writer of the text_____ A. is excited by the possibility of cloning fierce and extinct animals B. believes that extinct animals can be brought back to life by cloning C. thinks it impossible or unsuitable to clone extinct animals like dinosaurs D. dreams of dinosaurs returning to the earth 2. The film Jurassic Park is popular because _____. A. people are interested in the subject of cloning B. all the actors are dinosaurs C. it was directed by a scientist who clones dinosaurs D. it proves very interesting 3. Which of the following is true? ____ Mice were cloned in 1981. B. Dolly the sheep was the first cloned animal. C. The name of the cloned cow is “Bison” D. China was successful in cloning mammals. 4. The reasons why a group of cloned animals all die of the same illness do NOT include____. A. they have the same arrangement of genes B. there isn’t enough diversity in the group for it to overcome illnesses C. the illness is a new one D. their arrangement of genes can not resist that new disease 5. We can infer from the text that____ A. scientists are experimenting to clone dinosaurs B. dinosaurs will never return to the earth C. cloned animals will only live in the zoo D. the DNA of dinosaurs can only survive 10 000 year The popularity of the film Jurassic Park, in which a scientist clones several different kinds of extinct dinosaurs,