Unit2Cloningwhereisitleadingus导学案- 高中英语人教新课标选修八.doc

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1、Period2 Cloning :where is it leading us?导学案(二)一学习目标：1.To learn about some facts and views about cloning. 2.To develop the Ss reading ability by skimming and scanning the passage. 二重点难点：To develop the Ss reading ability by skimming and scanning the passage. To enable the Ss to learn about cloning and

2、 to develop their reading ability.To enable the Ss to talk about what we should do to deal with cloning properly.三预习自测：Fast -reading1.What is cloning ?_2. What is the writing style?A. Expositive (说明性的). B. Descriptive. C. Argumentative (议论性的).3.Can you put the topic sentences into paragraphs that th

3、ey belong to?(Attention: one of them belongs to nowhere.)Para 1 Dollys problem and death Para 2 What is cloning?Para 3 Two major uses of cloning Para4 Arguments brought by Dolly Para5 The procedure for human cloning The effect of Dolly 四合作探究：探究一：Second reading1.What are the two major uses of cloning

4、 ?_2. Is cloning plants the same with cloning animals ?3.Give a right order(顺序) of cloning Dollys procedure（过程 ）The cell divides and grows into an embryo.The lamb is the clone of the donated cell from Sheep B. A nucleus is taken out of Sheep Bs somatic cell .The embryo is put into female Sheep C.The

5、 egg cell from Sheep A and the nucleus from Sheep B are joinedusingelectricity. The egg cell from Sheep A is removed a nucleus.The order:_ _ _ _ _ _探究二：Third reading1.True or False questions.Dolly the sheep was the first successful clone of a mammal.（ ）Some countries like China didnt stop human clon

6、ing research.（ ）a cloned animal usually dies earlier than the original one.（ ）Evil leaders can clone themselves to abtain their ambitions.( )2. What is the writers attitude(态度) toward cloning in this passage?A. The writer is against cloning.B. The writer is in favor of cloning.C. The writer does not

7、 state any personal opinion about cloning.3. Whats the affect of cloning ?On the one hand ,it opened everybodys eyes to the _of using cloning to cure_and even produce_; On the other hand , Its appearance raised a storm of _and had a great impact on the _ and public_.五当堂检测：What are the advantages and

8、 disadvantages of cloning ?advantages 1.Cloning plants can produce _ _ of plants .2. Cloning plants can be useful for research on new _ species.3. Medical cloning could produce _ for serious illnesses.disadvantages1. Animal clones may develop the _ of older animals.2. Animal clones may _younger than

9、 the donor animals.3. Evil leaders may want to _ themselves to attain their ambitions.4. Religious leaders raised _ questions about human cloning.六：总结提升：The writers point of view in this reading passage is _because _In a word, As a coin has two sides, everything has two aspects. Cloning also has advantages and disadvantages. So we should use the technology of cloning correctly.Homework:.Read the text carefully after class and underline the useful expressions in the passage and learn them by heart.