人教版高中英语课件：Unit2WhereIsItLeadingUs.ppt

Unit 2,Cloning: Where Is It Leading Us?,Jintai Senior High School,Du Kun,Dolly是世界上第一例用体细胞─乳腺上皮细胞, 通过细胞核移植技术, 在复杂的人工操作下, 得到的一只小绵羊 2002年4月16日美国第一头克隆牛“艾米”产下牛犊喜作妈咪 a cloned ox,,2002年5月中旬成功地繁殖了一只胚胎细胞克隆兔a cloned rabbit,,第一只克隆猫 the first cloned cat,克隆马及其“母亲兼姐姐” a cloned horse,克隆的荧光小猪(左)和正常小猪(右)a cloned pig,Cloning is a way of making an exact copy of another animal or plant.,What is cloning ?,,,The definition of cloning,exacttwincommercialstraightforward undertakebreakthrough procedurecarrier,adj. 精确的；准确的 n. 双胞胎之一 adj. 成对的； 成双的 adj. 商业的；贸易的 adj. 简单的；坦率的 vt. 着手；从事；承担 n. 突破 n. 程序；步骤；手续 n. 携带者；搬运工；运输工具,Words preview,cast altogetherarbitrarycorrection objectobjectionmedium the mediaobtain,vt. 扔；投；掷 adv. 总共；完全地 adj. 任意的 n. 改正；纠正； 修正 vi. 反对；不赞成 n. 不赞成；反对；异议 n. 媒介；手段；工具 大众传播媒体 vt. 获得；赢得,Words preview,attain moralconservativeforbidaccumulate,vt. 获得；到达 adj. 道德(上)的；伦理的 adj. 保守的；守旧的 vt. 禁止；不准 vt. 积累；聚积,Words preview,pay off cast down object toin favour of,得到好结果；取得成功； 偿清 沮丧；不愉快 反对 赞成；支持,Careful readingTry to understand the text as much as possible,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 canbenefit the world. B. animal cloning could be misused by badpeople so it must be forbidden.C. animal cloning is well developed because Dolly the sheep was born. D. animal cloning raised arguments andscientists 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 one B. usually lives longer than the original one C. usually lives shorter than the original one D. is usually as healthy as the original one,5. The cloning of Dolly the sheep succeededbecause____. A. it’s easier to clone a sheep than otheranimals 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.,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? Expositive.（说明性的） Descriptive（描述性的） C.Argumentative(议论性的）,,Post-reading: Choose the right answer according to the text.,,3. The main idea of the text is____ A. animal cloning is very valuable and canbenefit the world. B. animal cloning could be misused by badpeople so it must be forbidden.C. animal cloning is well developed becauseDolly the sheep was born. D.animal cloning raised arguments andscientists 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 one B. usually lives longer than the original one C. usually lives shorter than the original one D. is usually as healthy as the original one,5. The cloning of Dolly the sheep succeededbecause____. A. it’s easier to clone a sheep than otheranimals 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.,Scanningto get detail information,scanning,Listen to the passage again and answer these questions.,1 What are the two major uses of cloning? 2 Why is it easier to make commercial plant clones than animal clones? 3 What was the first clone from an adult animal? At what age did this clone die? 4 Why is cloning controversial in some countries?,1 What are the two major uses of cloning?2 Why is it easier to make commercial plant clones than animal clones?,The first use is to produce commercial quantities of plants. The second is to research on new plant species and do medical research on animals.,Cloning plants is straightforward, but the cloning of animals is very complicated.,3 What was the first clone from an adult animal? At what age did this clone die?4 Why is cloning controversial in some countries?,The first clone from an adult animal was Dolly the sheep. She died in 2003.,Cloning is controversial in some countries for moral and religious reasons.,Read the passage quickly to find the main idea of each paragraph.,While-reading : Find the main idea of each paragraph,,1.Cloning is ______________________________ 2.Cloning has ____________ uses. 3.The _________ of Dolly. 4. The ________ of Dolly. 5. People’s _______ towards cloning.,。