人教版高中英语课件：Unit 2 Where Is It Leading Us(2).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,exact twin commercial straightforwardundertake breakthroughprocedure carrier,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,castaltogether arbitrary correction object objection mediumthe media obtain,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,attainmoral conservative forbid accumulate,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 downobject to in 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 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.its easier to clone a sheep than other animals B.the scientists were determined and worked hard with patienceC.the scientists were rewarded and got lots of moneyD.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 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 one D.is usually as healthy as the original one,5.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 patienceC.the scientists were rewarded and got lots of moneyD.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.,Scanning to 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.Peoples _ towards cloning.,a way of making an exact copy of another animal and plant.,problems,two major,effect,attitude,What do you think is the writers point of view in this reading passage?Is it infavour of cloning or against it?I think the writer is _ because_,impartial,he/she does not state any personal opinion about cloning.,Discussion,Write a passage titled Is cloning good or bad?Your passage should include the following：Advantages of cloning 2)Disadvantages of cloning3)Your opinion of it,Homework,
