选修8 Unit2 warming up Cloning
选修8Unit2 Cloning
4. Religious leaders raised _______ questions about moral human cloning.
5.What can we learn from the passage ?
As one coin has two sides, everything has _____ two bad aspects(方面). Cloning has both ______and _____ good aspects ._______________, if cloning is used in a On the one hand
Para 1 Para 2
① Dolly’s problem and death
②What is cloning? ③ Two major uses of cloning
④ Arguments brought by Dolly
Para 3
Para4 Para5
⑤The procedure for human clonin
A stem （茎） Take cuttings from growing plants to make new ones.
They are identical in sex and appearance, who are produced from the same original egg.
First reading
1. What is cloning? It is a way of making an exact
copy of another animal or plant.
2.What’s the style of the passage ?
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.
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.。
选修 8 unit 2 Warming Up
CHale Waihona Puke ecking1.Recall the words we have learnt. 2.Recite their usage.
Unit 2 Cloning
Warming Up
Follow the radio to read the words (one word two times)
Discussion 1. Read the words correctly and correct the pronunciation. 2. Finish the paper.
11．reason n．原因；理由 ． ．原因；理由→reasonable adj.合情理 合情理 讲道理的； 的；讲道理的；公道的 12．merely adv.仅；只；不过 不过→mere adj.仅仅的；只 仅仅的； ． 仅
不过的
记记惯用语
• 1．pay off得到好结果；2．cast down沮丧；不愉快 ． 得到好结果； 沮丧； 得到好结果 ． 沮丧 • 3．in favour of赞成；支持 ． 赞成； 赞成
一定或注定(做 4．(be) bound to (do)．..一定或注定 做)…… ． ． 一定或注定 5．strike... into one‘s heart使……刻骨铭心 ． 使 刻骨铭心 6．from time to time不时；偶尔 不时； ． 不时 7．bring back_to life使复生；使复活 ． 使复生； 使复生 8．in vain白费力气；枉费心机 白费力气； ． 白费力气 9．in good/ poor condition状况很好 坏)；情况 状况很好(坏 ； ． 状况很好 很好(坏) 很好 坏
9. conservative---conservation n. 保存； 保护 10. accumulate--- accumulationn. 积累； 堆积物； 累积量 11. be in favor of =be for 12. two loaves of bread 13. assumption---assume vt. 假设，假定； 呈现 14. regulation---regulate vt. 调节，调整； 校准； 控制，管理；
选修八 Unit 2 Cloning warmingup and reading
There are moral objections to cloning human beings
Cloning can help save endangered animals.
2.What do you think is the writer’s point of view in this reading passage? Is it in favour of cloning or against it?
Animal clones may Medical cloning develop the illness could produce cures of older animals. for serious degenerative illnesses in humans. Animal clones may Cloning plants can die younger than the produce plants of donor animals similar quality for sale
Do you know about:
The procedure works of a sheep?来自克 隆 羊 诞 生 图 示
scanning
Para1
Find out the answers in the text.
1.what’s cloning? 2. How do gardeners clone plants?
scanning
Para4
Find out the answers in the text.
1.what’s the effect of Dolly? The whole paragraph.
scanning
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。
金老师教育培训人教版高中英语选修8 专题2.1 Unit 2 Cloning Warming Up
Unit2 Cloning2.1 Warming Up & Pre-reading &Reading & Comprehending重点单词1．________ vi.不同，相异2．________ vt. 着手，从事，承担3．________ vt. 扔，投，掷4．________ vi. 反对，不赞成5．________ vt. 获得，赢得6．________ vt. 获得，到达(水平，年龄，状况等)7．________ vt. 禁止，不准8．________ vt. & vi. 积累，聚积9．________ adj. 精确的，准确的10．________ n. 突破重要短语1．pay ________ 得到好结果，取得成功，偿清2．________ the one hand 一方面3．cast ________ 使失望，使沮丧4．have an impact ________ 对……有影响5．________ present 目前，现在6．________ favour of 赞成，支持7. object____________反对；不赞成8. be ready____________为……做好准备9. be ______________ to对……适宜10. provide...________...为……提供……关键句型1．Cloning plants is straightforward cloning animals is very complicated.克隆植物简单然而克隆动物非常复杂。
2．Then that Dolly had become seriously ill.接着传来了多莉病重的坏消息。
3．However，scientists still wonder and where it is leading us.然而科学家们仍对克隆技术有助于人类还是有害于人类以及克隆技术将把我们引向哪里感到困惑。
新人教版选修82020学年高中英语Unit2CloningSectionⅡWarmingUp测试卷
Section ⅡWarming Up & Reading—Language Points课时作业Ⅰ. 单句语法填空1．We will provide room and board for all of them.2．It's cheap, but on the other hand it isn't good.3．Parents' behavior will have a great impact on children.4．I object to the plan while my brother is in favour of it.5．His formal style of clothes was appropriate to the occasion.6．Everyone in the class voted in favour of the dancing party.7．The plane will be ready for takeoff in ten minutes.8．I must differ with your opinion on the matter.9．We are supposed to undertake (undertake) the responsibility to lead a lowcarbon life, which is of great significance.10．My persistence finally paid off when they called me in for an interview.Ⅱ. 单句改错1．Can you tell the difference of the two words？of→between2．I cannot undertake to finishing the task on time.finishing→finish3．The efforts made by Adrian and his parents paid back.back→off4．Sometimes, some students object the idea that English classes are taught in English.object后加to5．The law forbids smoke in public buildings.smoke→smokingⅢ. 阅读理解Authors Kyle Kurpinski and Terry D. Johnson pretty much have me convinced that human cloning is quite possible and is a future certainty. Kurpinski and Johnson are both bioengineering experts; unlike similar scientists you have seen in the movies, they both have a sense of humor. What surprises me is that Kurpinski and Johnson are able to take something as complicated as DNA and make it understandable.The book How to Defeat Your Own Clone teaches us wh at is now known as DNAencoded (编码), how that happens, and why people with similar DNA don't look or act the same. The book not only helps us get a basic understanding of what DNA and its purpose are，but also explains cloning and stem cell (干细胞) research. It occurs to me that a lot of people who are against stem cell research don't know what they are protesting about. The authors provide a history of cloning, as well as information about stem cells.The real fun starts when the authors attack various myths about cloning. Obviously, too many people have been watching too many bad movies and television programs. Remember they're just fictional stories. If, somehow, scientists manage to clone you. Twenty years from now your clone isn't going to kill you. Among the myths explored and exploded are that a clone will know everything you know and will act as you do, that heads which are cut off can be kept alive, and that a clone has no belly button (肚脐)．Many of the myths are ridiculous but many people believe them.Kurpinski and Johnson also detail some bioimprovements “that really work”. You see, genes can be controlled to help you sleep better and become smarter, healthier, and taller. Well ...not exactly you, but future generations.If you do wind up in a battle with your own clone, who will be considerably younger than you, remember that it is not you and that it doesn't know what you know.【解题导语】本文介绍了一本关于克隆知识的书。
人教版高中英语选修八高二Unit2Cloning第1课时Warmingup
4)起身；起来；起立 She rose slowly from her chair to greet us. 她从椅子上慢慢地站起来向我们问候。
【词语辨析】
arise, rise, raise, lift 这些动词均有“上升，举起”之意。 1)arise书面用词，多用于诗歌或比喻中，具有特殊的 修辞色彩。 An opportunity has arisen. 机会来了。 2)rise普通用词，指具体的或抽象的事物由低向高移动。 The river has risen(by)several meters. 河水上涨了好几米。
A．differ
B．modify
C．resemble
D．classify
答案：C 本题题意：他们彼此倒有点相像，因为他
们都是光头墨镜(酷劲十足)。resemble表示“与(他人或他
物)相似；像……”。
(2)(2007上海-25)Leaves are found on all kinds of trees,
3)raise与lift 可换用，但着重“垂直高举”或“将物件由 较低处移至较高处的适宜位置，以发挥应有的作用”，有 时作引申用。
She raised her finger to her lips as a sign for silence. 她举起一根手指放在唇边，示意肃静。 4)lift 语气比raise强，指“用体力或机械力把某物从地 面举到一定的高度”，强调花费的努力，有时用于比喻义。 She can lift a pail of water from the ground. 她能把一桶水提起来。
present economic situations at home.
A．with; in
B．from; over
人教课标版高中英语选修8 Unit2 Warming up and Reading (共32张PP
Task 2: Careful Reading
Para 1： The definition of cloning
-It happens both in p__la_n_t_s_ and in_a_n_im__a_l_s.
-They can be cloned byt_h_e_m__se_l_v_e_s_ and
by h__u_m_a_n_s_.
Natural clone
Man-made clone
Task 2: Careful Reading
Para 2: two major uses and the difficulty
1.How many major uses does cloning have? 2.Which of the following about Dolly the sheep
The gardener is going to put it into a pot to produce another plant. He is actually making a copy of the plant.
Twins Natural clone
They are born naturally and are identical in sex and appearance.
it. D. Dolly had characteristics of all three sheep.
Para 2:
1. How many major uses does cloning have?
Two. Firstly, …commercial… Secondly, …research…
Para 2:
Task 1: Global Reading Match the paragraph with the main idea.
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__
高中英语课时6Unit2CloningWarmingUp 版选修8
5．Whenever in trouble, she always comes up to me and ___a_s_k_s_f_o_r _a_f_a_v_o_r _.
6. At worst we'll have to sell the house so as to ____p_ay__o_f_f ____ our debts.
our daily life，for example, the Internet.
Ⅲ.单句填空 1．The rescuers were forced to call ____o_f_f__ the search for survivors due to the worsening weather. 2．The flood last month in the east was a real disaster, _l_e_av_i_n_g__ (leave) 19 people dead and 78 missing. 3．The young man was glad that his experience as a cook in the army finally paid __o_f_f____. 4．She always differs __w_i_th____ me ___o_n____ how to spend the vacation.
7．Some managers have ra_is_e_d_a_n_o_b_j_e_c_ti_o_n_t_o_ laying off too many
employees. 8．The development of science and technology _h_a_s_a_n_i_m_p_a_c_t_o_n___
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:
高二英语选修八_Unit2_Warming_up_名师教学设计
Unit2 warming up 名师教学设计人教版高二英语选修8Unit 2 Cloning: Where is it leading us?教学设计江西省临川二中高中英语组周招红一、教材分析本单元以Cloning为话题，以1996年英国实验成功的克隆羊Dolly为例，学生可以了解什么是克隆、克隆的利弊以及对克隆技术的反思。
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。
二、教材重组从话题内容上分析，Warming Up 与Reading相一致；而从训练目的上分析与TALKING比较一致。
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）”。
三、教学目标知识与能力1.学习课文中关于克隆这一新生物技术的有关知识2.利用已获取的信息发表自己对进行人类克隆的看法3.形成分析篇章结构的能力和提升逻辑思维能力4.学会对所学的内容进行复述和提高处理信息能力和语言表达能力四、教学的重难点1、掌握阅读说明文的技巧与方法，能够筛选和提取文章的一些重要的信息是教学的重点之一。
2、学会对所学的内容进行复述，弹性再现文本内容。
五、教学过程Step I: Warming upPlease look at the pictures on Page10, and discuss which ones are natural clones and which ones are man-made.Explain how they differ.【设计意图】通过图片激发学生兴趣，引出本单元的话题，要求学生通过讨论，了解两种不同的克隆自然克隆与人工克隆，为后面的阅读做铺垫。
StepⅡ Listen to the tape and find out the main idea of each paragraphGive students the main idea of each paragraph and let students find out the correct ord er .Para1: A. people’s reaction to cloningPara2: B. The problems of Dolly.Para3: C. the definition of cloningPara4: D. The effect of Dolly.Para5: E. The major uses of cloningSuggested answer : CEBDA【设计意图】让学生归纳每段段意，提供具体信息，旨在帮助学生把握课文要点，学会总结和归纳课文内容。
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Homework
Surf the Internet and find out more
information about cloning.
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.
பைடு நூலகம்
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.
[,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
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
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.
对于如何解决问题，我跟他的意见不一致。 They differ with each other on moral
standards. 关于道德标准，他们的见解不同。 The boy differs from his mother in character. 这个小男孩在性格方面不同于他的母亲。
用介词 from, with, on, about, upon 或 in 填空。 from/with on/about/upon 1) We differ ___________ him _____________ that question. 2) The two nations differ ____ culture in
Chinese differs greatly from English in pronunciation. 汉语与英语在发音上有很大的不同。
Modern airplanes differ from early ones. 现代飞机跟早期的在很多方面有所不同。
I differ with him how to solve the problem.
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?
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.
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
differ ( vi.), 主要有两个义项: “不同, 相异； 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
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/
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.
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.
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”.