选修八 2.7《Unit 2　warming-up》学习培训模板课件.ppt

1、新课标人教版课件系列高中英语选修选修(模块）模块）8-8-2.7Unit 2 Cloning warming up and speaking Do you enjoy watching TV series?Have you ever seen Journey To The West?What is clone?Clone,also called reproduce asexually(无无性生殖性生殖/繁殖繁殖),is the creation of cells or whole animals using DNA from a single“parent”,without using the

2、 normal reproductive(有性生殖有性生殖)process.The clone has the same DNA to the parent.cloneNatural cloneNatural cloneMan-made cloneMan-made cloneNatural clone is one that occurs from the“parent”in a natural form of cloning without human help.Man-made clone is one that produced through human intervention(介入

3、介入).cactusstrawberry twinspendulum orchid(吊兰吊兰)natural cloning examples Man-made cloning examples the important events in cloning historyIn 5000B.C.(谷物选种谷物选种)Human Beings began to choose the best seeds from some kinds of crops.That was the beginning of controlling life according to humans will.In 19

4、52:Cloning tadpole(克隆蝌蚪克隆蝌蚪)The American scientists created a copy of tadpole by means of using a tadpole cell.This tiny tadpole has become the first kind of cloning animal.In 1978:The first case of tube infant(试管婴儿试管婴儿)appeared.A British doctor used the sperm（精液）（精液）of a man and fertilized(受精受精)it

5、in a test tube(试管试管).Then transplanted(移植移植)the embryo(胚胎胚胎)into the womb(子宫子宫)of a healthy mother.The first tube infant called Louis appeared.In 1996,the famous sheep“Dolley”was cloned successfullyDolley and the Father of Dolley Lanwilmut(伊恩伊恩.威尔威尔姆姆)In 1998 A series of things were cloned.The scien

6、tists in Hawaii University cloned over 50 mice.Some private institutions (协会协会)successfully cloned little oxen.In 2002,the scientists of A&M University in USA has bred the first cloned cat in the world.Nowadays:Cloned dog,mouse,rabbit,goat,ox,pig appeared.China become the seventh country that has th

7、e ability to clone pigs.China has succeeded in using embryonic（胚胎的）胚胎的）cell to clone many animals.Quiz Natural clone Man-made clone strawberryIs it natural clone or man-made clone?identical dogsNatural clone Man-made cactustwinsT or F questions 1 Clone can be from both natural clone and man-made clo

8、ne.2 The sheep,named Kitty was the first successful clone of a mammal(哺乳动物哺乳动物).TF3 Only strawberries and cactus(仙人仙人掌掌)are natural clones.F4 Since Dolley,researcher have cloned a number of large and small animals including goats,cows,mice,pigs,cats,rabbits and dogs.5 A parent can clone a child who

9、is dying of a terminal illness(不治之症不治之症).TFEnjoy one play Background:A man has lost his left hand,one day his friend tells him the news that a doctor can transplant one new hand for him.The play happens like this Guessing:What will the doctor say at the end of the play?Is cloning good or bad for us?

10、Advantages Disadvantages Group 1 and 2 Group 3 and 4Mini-DebateAre you interested in the topic of cloning?Do you believe that we will have cloned human soon?Do you think a cloned human should have human rights?Do you support medical cloning?Speaking Interview about cloningSituation:A reporter from C

11、hina Daily is interviewing three famous scientists about their opinions of cloning.Do you think it is wise?Do you think it is wise?Whats your opinion of?Whats your opinion of?I think you should I think you should I agree with you that I agree with you that I would never accept I would never accept Please preview reading comprehension and get some information about Dolley Homework