选修8 Unit2 warming up Cloning
Are the following clones the same? If not, what is the difference?
NO. Dolly is an example of man-made clone. The twins are natural clones.
What is a clone?
The world’s first cloned cat, kitten, named Cc. It was created using a cell taken from an adult cat, Rainbow.
In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-made. Think about how they differ.
produce another plant.
4. What do you know about twins?
There are twins of the same sex and those of different sexes. The twins here are identical in sex and appearance and are good examples of natural clones. They carry the same genetic information.
Medical cloning could produce cures for serious illnesses in humans. Cloning plants can produce plants of similar quality for sale.
Cloning plants can be useful for research on new plant species. Cloning can help save endangered animals.
Unit 2 Cloning
Warming Up
A These two lovely girls are ____. A. twins B. cloned
Natural clone
Natural clone is one that occurs from the “parent” in a natural form of cloning without human help. (monozygotic multiple births单卵多胎/
How is a clone produced?
Problems or dangers of cloning
Animal clones may develop the illnesses of older animals. Animal clones may die younger than the donor animals. Evil leaders may want to clone themselves. There are moral objections to cloning human beings.
cloned animals
Dolly and its creator
产于1996年7月5日，1997年首次向公众披露
第一只克隆宠物猫
cloned rabbit
克隆的荧光小猪(左)和 正常小猪(右)
克隆马及其 “母亲兼姐姐”
The world’s first cloned mule (驴), was born on May 4. He is created from a cell of his brother.
1. It’s the most famous sheep in the world. Do you know how Dolly is different from other sheep?
She was cloned while
the others were born
naturally. It is the copy of another sheep.
differ ( 不同意, 意见相左”。常见的搭配有:
1) sb. differ from/with sb. on/upon/about sth. : 某人与某人在„„方面意见不同 2) sth. and sth. differ in… : 某物与某物在 „„方面不同 3) sth. differ from sth. : 某物与某物不同 difference n. 不同 different adj. 不同的
Advantages of cloning
True or False
1. Cloning means making a copy of an animal or a plant. F 2. Gardeners can make a lot of money by cloning plants. T 3. Cloning animals is as complicated as cloning plants. F 4. Dolly the sheep was the first successful clone of a mammal. T 5. Natural clones happen in animals as well as in plants. T
关于道德标准, 他们的见解不同。
They differ with each other on moral standards.
用介词 from, with, on, about, upon 或 in 填空。 upon / over from/with on/about (1) We differ _________ him _________ that question. in (2) The two nations differ ___culture and religion. from/ with (3) The climate here differ __________ that of the South. • difference n.差异, 差别, 分歧, 争论, 差额 • different adj.不同的
Is it good cloning people?
Oh! My God! I was cloned!
New Words
1. differ vi. In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-made. Explain how they differ. 两人一组, 观察图片并讨论哪些是自然无性 繁殖, 哪些是人工的。解释它们的区别。
The advanced technique in genetics (遗传学) with which scientists can create or copy things with the same DNA.
Scientific Definition
Cloning is the creation of cells or whole animals by using DNA from a single “parent”, not with the normal reproductive 繁殖process. The clone has the same DNA as the “parent”.
Chinese differs greatly from English in pronunciation. 汉语与英语在发音上有很大的不同。
她的方法跟我的没有很大不同。
Her method doesn’t differ much from mine.
对于如何解决问题, 我跟他的意见不一致。
I differ with him on how to solve the problem.
Homework
Surf the Internet and find out more
information about cloning.
2. What can you see in the second picture?
A strawberry plant producing runners in a natural form
of cloning.
3. Who cut off the stem of the plant?
A gardener. And the gardener is going to put it into a pot to
[,mɔnəuzai'ɡɔtik] cuttage 扦插
Clone?
)
Artificial clone Man-made clone is one produced through human intervention (介入) .
natural clones
natural clones
man-made clones
人教课标版高二英语下册选修8Unit2Warming up 共20张
Diversity in a group of cloned animals
Advantage of diversity Disadvantage of diversity
If there is a new illness
unsuitable to clone
extinct animals
Reason 1: You need perfect DNT
Reason 2: There is not enough diversity for cloned
animals to overcome new diseases.
Reason 3: It would be unfair to clone any extinct
new illnesses.
2. Why is it wrong to
clone an extinct animal if it would have to live in a zoo?
It is not a good idea to clone an
animal that would have to live in a zoo because it is not a suitable habitat to develop and increase its numbers.The zoo is not a natural environment for a wild animal.
A. undertake B. agree C. employ D. charge
9. It is very____ that there has been an increase in crime in
高中英语 Unit 2 Cloning Section Ⅰ Warming Up课件 新人教版选修8
The new results suggest that variation in clones of
plants may have different underlying causes from those of
variation in clones of animals — where it is believed that the
10
Fast Reading 1．Read the text and write down the main idea of the text.
The text is mainly about the _p_r_o_c_ed__u_r_e of animal cloning and the life of Dolly the sheep，as well as the reasons why cloning is still _c_o_n_t_r_o_v_er_s_i_a_l _.
Section Ⅰ
Warming Up & Reading — Pre-reading
1
1．What are the advantages and disadvantages of cloning? 2．Not only animals but also plants can be cloned. Do you know
8
2．Look at these pictures and tell which ones are natural clones and which ones are man-made.
_N__a_tu_r_a_l_c_l_o_n_e_s： __A__, _F_；__M__a_n_-m__a_d_e__cl_o_n_e_s_：__B_，__C_， __D__, _E__
人教课标版高中英语选修8Unit2Warmingup and Reading I(共20张PPT)
animals
_q_u_a__li_t_y__ _f_o_r___ __s_a_le__ .
_E_v__il____ _le_a_d__e_r__ may
want to clone themselves.
Cloning plants can be
_u__se_f_u__l for research on __n_e_w___ _p_l_a_n_t_ _s_p_e_c_i_e_s_ .
＊D. Famous persons who have passed away
can be cloned.
4. What is people’s fear about human cloning? Which of the following is wrong?
A. Cloned Hitlers would do harm to the world.
Surf the Internet to find more information about cloning and you are expected to present it to your classmates in the next class.
2.Cloning has _t_w_o__m_a_j_o_r__ uses.
3.The _p_r_o_b_le_m__s_ of Dolly.
4. The _e_ff_e_c_t___ of Dolly.
5. It is _f_o_r_b_id_d__en__ to clone human beings.
Unit 2 Cloning
Warming up ( 5ms )
Look at the following pictures and answer the questions:
选修八Unit2Cloning教学设计
Unit2. CloningReading 教学设计-雷翊Teaching contents,Doing reading comprehension about the textTeaching aims,Knowledge aims，Help the students understand the text very well.Ability aims，Improve the students’ reading ability.Emotional aims，1. stimulate students’ interest in cloning.2. Develop students’ spirit of cooperation and teamworkTeaching important points,how to describe cloning.Teaching difficult points,Help the students analyze the writing techniques of the article.Teaching methods,1. task-based teaching and learning2. debate methodTeaching procedures and ways,Step1: Warming upShow some pictures of A strawberry plant 、Twins、cloning cattles、Identical dogs on the screen. Get students to look at the pictures and discuss:Which is natural clone? Which is man-made clone? and then explain how they differ.(设计说明：克隆技术是一门前沿科技，学生对此兴趣浓厚，利用幻灯片展示当今克隆技术产生出来的动植物照片，学生的兴趣被瞬间激发，这就为进一步的学习做好了铺垫。
选修8Unit2 Cloning
Look at the pictures and discuss which ones are natural clones and which ones are man-made clones .
The plant produces its own runners.
⑥ The effect of Dolly
Second reading
1. What are the two major uses of cloning ?
The first use is to produce commercial quantities of plants ; the second one is to research on new plant species and medical research on animals.
Para 1 Para 2 Para 3 Para4 Para5
① Dolly’s problem and death ②What is cloning? ③ Two major uses of cloning
④ Arguments brought by Dolly ⑤The procedure for human clonin
Sheep B are joined using electricity. ⑥ The egg cell from Sheep A is removed a nucleus.
The order:_⑥___ _③___ _⑤___ __①___ _④___ _②__
Third reading
1.True or False questions. ①Dolly the sheep was the first successful
高二英语人教版选修八同步练习 Unit 2 Cloning Warming Up
Unit 2 Cloning Warming Up, Pre-reading, Reading &Comprehending一、汉译英1.Sports account for a growing amount of income made on the sales of _____________(商业的)time by television.2.The choice of players for the team seemed completely ___________(任意的).3.I could not find the _____________(准确的) word to express my feelings at that time.4.In order to __________(禁止) the technique, they take some practical measures.5.It is said that the author wrote seven books __________(总共).二、选用方框中短语的正确形式填空,每个限用一次1.Their language and customs __________ ours as we are from different countries.2.Some managers have __________ laying off too many employees.3.Jeans __________ an informal party.4. Opportunities and success tend to be __________ those who are ready.5. On the one hand, we should ask for help; __________ we should try our best to rebuild our houses.6. After ten years of hard work, Mathild __________ all debts at last.7.He will set off the day after tomorrow, __________ on May 26, Tuesday.8.His parents firmly __________ his going into the forest by himself.9.Mary __________ ever since her mother became so ill.10.The development of science and technology __________ our daily life, for example, the Internet.三、阅读理解Terrafugia Inc. said Monday that its new flying car has completed its first flight, bringing the company closer to its goal of selling the flying car within the next year. The vehicle-named the Transition–has two seats, four wheels and wings that fold up so it can be driven like a car. TheTransition, which flew at 1,400 feet for eight minutes last month, can reach around 70 miles per hour on the road and 115 in the air. It flies using a 23-gallon tank of gas and bums 5 gallons per hour in the air. On the ground, it gets 35 miles per gallon.Around 100 people have already put down a $10,000 deposit to get a Transition when they go on sale, and those numbers will likely rise after Terrafugia introduces the Transition to the public later this week at the New York Auto Show. But don’t expect it to show up in too many driveways. It’s expected to cost $279,000.And it won’t help if you’re stuck in traffic. The car needs a runway.Inventors have been trying to make flying cars since the 1930s, according to Robert Mann, an airline industry expert. But Mann thinks Terrafugia has come closer than anyone to making the flying car a reality. The govemment has already permitted the company to use special materials to make it easier for the vehicle to fly. The Transition is now going through crash tests to make sure it meets federal safety standards.Mann said Terrafugia was helped by the Federal Aviation Administration’s decision five years ago to create a separate set of standards for light sport aircraft, which are lower than those for pilots of larger planes Terrafugia says an owner would need to pass a test and complete 20 hours of flying time to be able to fly the Transition, a requirement pilots would find redatively easy to meet.1.What is the first paragraph mainly about?A.The basic data of the Transition.B.The advantages of flying cars.C.The potential market for flying cars.D.The designers of the Transition.2.Why is the Transition unlikely to show up in too many driveways?A.It causes traffic jams.B.It is difficult to operate.C.It is very expensive.D.It bums too much fuel.3.What is the government’s attitude to the development of the flying car?A.CautiousB.Favorable.C.Ambiguous.D.Disapproving.4.What is the best title for the text?A.Flying Car at Auto ShowB.The Transition’s Fist FlightC.Pilots’Dream Coming TrueD.Flying Car Closer to Reality四、七选五How to Care for a Pet FishTaking care of a pet is a big responsibility, so you should make sure you learn all about your pet before bringing it home. ①______ That' s because fish can give them a good idea of whether or not they'll be able to take care of a more complicated(复杂的) pet later on.First, choose what types of fish. ②______ They are easier to raise and give you enough experience to take care of fish and their tanks(水箱). Some kinds of fish do not get along with others, so you'll need to choose what kinds to buy.Next, make sure you have all of the necessary supplies. Fish need a fish tank. Make sure it is big enough for the number of fish. Fish tanks need a light and some machines to keep the water clean and at a comfortable temperature. ③______Now you can set up your aquarium(水族馆). Wash sand and decorations( 装饰物) clean and fill the bottom of the tank with them. ④______ Follow the instructions on the heater to heat up the water to the temperature your fish will need. Make sure your light is ready to go, too!⑤______ The pet store keeper can teach you how to make your fish get comfortable before you put them into your aquarium. Once the fish are in the tank, you have to watch them closely to make sure they don't get sick. Feed them in small amounts a few times a day. You will have to change some of the water at least once a week.A. Then, fill the tank with water.B. You are ready to pick up your fish.C. Many kids have fish as their first pet.D. You need some beautiful tanks to change.E. Be sure to get food for your fish as well.F. Freshwater fish are the best fish to start with.G. Save up your money for fish tank decorations.答案以及解析一、1.答案：commercial2.答案：arbitrary3.答案：exact4.答案：forbid5.答案：altogether二、答案：1.differ from; 2.raised an objection to;3.are appropriate for; 4.in favour of; 5.on the other hand; 6.paid off; 7.to be exact; 8.objected to; 9.has been cast down; 10.has an impact on三、答案：1.A; 2.C; 3.B; 4.D解析：1.本文是一篇记叙文。
人教版高中英语选修8《Unit2Cloning》教案
人教版高中英语选修8《Unit 2 Cloning》教案人教版高中英语选修8《Unit 2 Cloning》教案【一】教学准备教学目标一、语言知识目标初步理解、掌握课文中关于克隆的词汇，学习分析课文中的长难句子。
二、阅读技能目标1. 能获取和处理文章中的主要信息。
2. 能够掌握文中出现的重要的语言知识三、学习策略目标掌握速读、略读、猜测词义等阅读策略。
四、情感态度目标让学生认识到克隆的利和弊。
五、文化意识目标了解克隆，正确地利用克隆技术来为人类服务。
教学重难点初步理解、掌握课文中关于克隆的词汇，学习分析课文中的长难句子。
教学过程Step 1 Daily reportOne student comes to the front and gives a report about advantages and disadvantages of science and technology.Step 2 leading-inThe teacher shows some pictures and starts a discussion about cloning.Step 3 SkimmingTask 1: Whats the main idea of the passage? Task 2: Match the main idea with each paragraph Para 1: A. Peoples attitude towards cloning. Para 2: B. The problems of Dolly.Para 3: C. The impact of Dolly.Para 4: D. Two major uses and the procedure of cloning.Para 5: E. The definition(定义)of cloning.Step 4 ScanningTask 1. Look through Para 2 and answer the following questions.(1) What are the two major uses of cloning?(2) Which one is easier, to make plant clones or animal clones?Task 2. Look through Para 3 and fill in the chart. Task 3. Do the following translation and word guessing.(1). Translation:On the other hand, Dollys appearance raised a storm of objections and had a great impact on the media and public imagination.(2). The word controversial in paragraph 4 probably means_________.A. complicatedB. arguableC. importantD. valuableTask4. Do the following Tor F questions based on Paragraph 5.1. People feared some evil leaders might use cloning to reach their goal.2. All the research into cloning will be forbidden.3. Religious leaders are in favor of human cloning.Step 5 Enjoy beautiful sentences1. Cloning plants is straightforward while cloning animals is very complicated.2. At last the determination and patience of the scientists paid off.3. The fact that she seemed to develop normally was very encouraging.Step 6 Question and answerThis part is for students to find if they still have questions. If there is any, they can ask their classmates to help them.Step 7 QuizNote: This part is very challenging. In the picture there are five numbers. Students can choose their lucky number and answer questions. Most of the questions are based on what they have learned in class.Step 8. Test yourselfFill in the blank with proper words.Cloning is a way of _______ (make) an exact copy of another animal or plant. It has two major uses. One is _______ gardeners use it to produce plants. The ______ is that it is valuable for medical research on animals. ________, the process of cloning is difficult ___________ (undertake).The first successful clone, Dolly the sheep, made the whole _________ (science) world follow its progress, though it had ________ problems than the normal sheep. On the other hand, Dollys appearance _______ (raise) a storm of objections and had a great impact ______ the media and public imagination. Different people have different opinions on it. However, scientists still wonder ______ cloning will help or harm us and where it is leading us.Step 9 DebateTopic: Are you for or against cloning?课后小结HomeworkWrite a passage entitled My view on cloning.课后习题评测练习主要有两个。
人教版高二英语选修8_Unit_2_Cloning_全单元教案
Unit 2 CloningThe First Period warming upAims1. Talk about cloning2. Practice expressing and supporting an opinionContentsTask one: Looking and speakingIn pairs, look at the pictures and discuss which ones are natural clones and which ones are man-made. Explain how they differ.A.Dolly the sheepB. A strawberry plantC.TwinsD. Identical dogsTask two: Questions about cloningWhat is a clone?How is a clone produced?What benefits can humans gain from cloning?What problems may arise when humans are cloned?Task three: Free talkIn pairs, discuss what you understand about cloning, then list the questions you want to find out. Share your lists with one another.1. Should we clone human?2. Could cloning replace sex as the means of creating new human life?3. Could a parent clone a child who is dying of a terminal illness?The Second Period ReadingAims:1. Help the Ss to know how to describe cloning and how to catch the details of the text.2. Activate the Ss to show their opinions about the cloning and enable the Ss to write and article on this debate.Contents:Leading in by revision.Task one: Fast readingWhat is a clone?Show the following.1. Cloning means making a copy of an animal or a plant. (F. e xact… another)2. Gardeners can make a lot of money by cloning plants.(T.)3. Cloning animals is as complicated as cloning plants.(F. more than)4. Dolly the sheep was the first successful clone of a mammal. (T.)5. Natural clones happen in animals as well as in plants.(T)Task two: Careful readingRead the text again, try to answer the following questions and find out the main idea of each paragraph .Questions:1. What’s the main idea of the text?2. How many years did the sheep that donated the somatic cell most probably live?3. Why did the Cloning of Dolly the sheep succeed?4. What does the word ‘straightforward’ mean in the second paragraph?5. What is the writer’s attitude toward cloning in this passage?The main idea of each paragraph:Para. 1 Cloning is a way of making an copy of another animal and plant.Para. 2 Cloning has two major uses.Para. 3 The problems of Dolly.Para. 4 The effect of Dolly.Para. 5 It is forbidden to clone human being.Task three: Notes for debating: Should we use cloning?Argument for cloning:Cloning will be beneficial to humansWe could use cloning to cure illnesses.Arguments against cloning:healthy risks form mutation of genesemotional risksagainst naturerisk of abuse of the technologyCloned animals get ill and die quite young;The Third Period Language PointsAims:1. Enable the Ss to grasp the words of cloning.Get the Ss to master some useful expressions.Contents:1. differ v.1) “To be dissimilar or unlike in nature, quality, amount, or form”eg：Ambition differs from greed.2) “To be of a different opinion; disagree”eg：The critic differed with the author on several facts.2. exact adj. “Strictly and completely in accord with fact; not deviating from truth or reality”eg：an exact account; an exact replica; your exact words.3. commercial adj. 1) “Of or relating to commerce” 2) “Engaged in commerce’eg：a commercial loan; a commercial attaché; a commercial trucker.4. straightforward adj. 1) “honest’ 2) “easy to understand”eg: a ~ explanation; written in ~ language; a ~ problem in algebra5. procedure n.1) ‘A manner of proceeding; a way of performing or effecting something’eg：complained to the manager, and by this procedure got the money back.2) “A series of steps taken to accomplish an end”6. undertake v.1) “To take upon oneself; decide or agree to do”eg：undertake a task.2) “To pledge or commit (oneself) to’eg：undertake oneself to care for an elderly relative.7. breakthrough n.1) “An act of overcoming or penetrating an obstacle or restriction.”2) ‘A military offensive that penetrates an enemy's lines of defense’eg: a ~ in cancer research8. disturb v. “break the quiet, calm and peace’eg: She opened the door quietly so as not to disturb the sleeping boy.Don’t ~ the papers on my desk.9. arbitrary adj.1) “Determined by chance, whim, or impulse, and not by necessity, reason”eg：stopped at the first motel we passed, an arbitrary choice; arbitrary division of the group into halves.2) “Based on or subject to individual judgment or preference”eg：The diet imposes overall calorie limits, but daily menus are arbitrary.10. altogether adv.1) “Entirely; completely; utterly”eg：lost the TV picture altogether; an altogether new approach.2) “With all included or counted; all told”eg：There were altogether 20 people at the dinner.11. objection n. “The act of objecting”eg: He has a strong ~ to getting up early.~s to the plan will be listened to sympathetically.12. media n. 媒体eg: The running for president drew the ~’s attention.Now the press is an useful media.13. moral adj.1)“Of or concerned with the judgment of the goodness or badness”eg：moral scrutiny; a moral quandary.2) “Teaching or exhibiting goodness or correctness of character”eg：a moral lesson.14. accumulate v. “To gather or pile up”eg: By buying ten books every month, he soon ~d a library.Dust soon ~s if the room is not swept.15. forbid v.1) “To command (someone) not to do something”eg：I forbid you to go.2) “To command against the doing or use of (something); prohibit”eg：forbid smoking on trains.The Forth period Learning about language and Using languageAims:Let the Ss know more about the cloning.Improve the students’ listening, reading and writing ability.Contents:Task one: gap fillingplete the sentences using suitable words or phrases from the prevision sections.2.Rewrite the sentences using words of similar meaning to replace the underlined words.e the words and phrases below to fill in the passage.Task two: reading and discussing1.Read the passage and answer the questions.2.In pairs, discuss which extinct animals described below (which died out less than 10,000 yearsago) are worth restoring by means of cloning.a. Auroch (1627)b. Dodo bird (1755)c. Great auk (1844)d. Quagga (1883)Task three: listening and writing1.Read the statements before listening. Tick those that you hear.2.Listen to the tape again and then work with a partner to fill in the chart on page 17.3.Whose idea do you agree with according to the listening materials? Get ready to write acomposition. Think about the reasons for your point of view. Use your own ideas as well as those in the text.。
最新人教版高中英语选修8 Unit 2《Cloning》(Warming up)课件
所谓细胞核移植，是指将不同发育时期 的胚胎或成体动物的细胞核，经显微手 术和细胞融合方法移植到去核卵母细胞 中，重新组成胚胎并使之发育成熟的过 程。由于细胞核移植是产生克隆动物的 有效方法，故人们往往把它称为动物克 隆技术。
htt课p:堂//c讲a练i.7互cx动 中小学课件
htt课p:堂//c讲a练i.7互cx动 中小学课件
Celebrity Sheep Dolly
Dolly, the first mammal to be cloned from adult DNA, was put down by lethal injection on Feb. 14, 2003. Prior to her death, Dolly had been suffering from lung cancer and crippling arthritis (严重的关节炎).
There are different types of cloning, and cloning technologies can be used for other purposes besides producing the genetic twin of another organism. The three types of cloning technologies are: (1) recombinant DNA technology or DNA
Dolly the sheep Man-made clone
A strawberry pla课p:堂//c讲a练i.7互cx动 中小学课件
一株草莓依靠它沿地“爬走”的匍匐 茎, 一年内就能长出数百株草莓苗。
人教高中英语选修八Unit2-Cloning教学设计
Unit2 CloningReading: CLONING: WHERE IS IT LEADING US? 教学设计一、教材分析本单元以Cloning为话题，旨在通过单元教学，使学生了解克隆技术的优缺点，学会表达和支持个人观点，能用所学的有关Cloning的词汇去表述自己对这一新技术的观点和看法。
”阅读”（Reading）部分提供的材料CLONING: WHERE IS IT LEADING US?是一篇介绍克隆技术的说明文, 具体介绍了植物与动物克隆的区别，多利羊的诞生与死亡及由此引发的争论。
帮助学生进一步认识克隆的意义在于解决医学上的难题，为人类服务。
从话题内容上分析，Warming Up 与Reading相一致，从教材份量来说，可将Warming Up和Reading整合在一起，设计成一节任务型“阅读课（精读课）”。
二、学情分析我所带的两个班级的学生英语基础一般，平时较少阅读科学题材的文章, 知识面相对狭窄，阅读理解这篇文章还是有一定难度。
但学生的好奇心和学习接受能力比较强，可以布置学生课前上网或去图书馆找出一些有关克隆的资料，并与多媒体相结合简单介绍克隆及克隆技术的一些知识，让学生有了一定的知识准备以利于很好的理解课文。
三、设计理念及教学目标这节课的主要目的是培养学生跳读和细读的阅读技巧，使学生学会准确分析阅读问题，懂得从文章中找到关键句子摄取必要的信息，找出正确的答案。
我运用多媒体和学生搜索材料主动参与学习相结合，设计了表格、问答题、判断题和信息整理题。
这不仅提高学生的阅读技巧，也教会学生怎样处理不同的阅读问题。
四.教学目标Teaching goals1. Target language目标语言a. 重点词汇和短语clone，commercial，producer，undertake，arbitrary，object，forbid，ac cumulate，cast down，object to，the media，in favor ofb. 重点句子It is a way of….The fact is that….The question that concerned all scientists were: ….2. Ability goals能力目标Enable the students to describe cloning: What is the advantages of cloning？What is the problems or dangers of cloning？What is your opinion of cloning？3. Learning ability goals 学能目标Help the students learn how to describe cloning.Teaching important points 教学重点How to describe cloning.Teaching difficult point 教学难点Help the students analyze the writing techniques of the article. Teaching methods 教学方法Skimming, task-based method and debate method.Teaching aids 教具准备A recorder, a projector and some slides.Teaching procedures & ways教学过程与方式Step 1 Lead-in（3分钟）Show three cartoon pictures about cloning to arise students’interest s, then raise the question:1. What is cloning?2. Do you want to be cloned or not? why?通过展示图片和提问，激发学生对克隆技术的兴趣和好奇心，启发学生预测课文的内容，以便通过阅读验证自己的推测。