UNIT2CLONINGPERIOD1READING學(xué)案設(shè)計

1、2020學(xué)年度人教版選修八Unit2CloningPeriodlReading學(xué)案設(shè)計Saving lives has always been an important mission （使命） of science. Now science, and indeed all society, is facing a new dilemma: whether or not to try and save more lives through human cloning.The first cloning experiments in the 1950s involved frogs and to

2、ads （蟾蛛）.It was not until 1996 that scientists successfully cloned the first mammal, the now world-famous sheep known as Dolly. Cloning techniques have continued to improve since then, and today there are cloned mice, cats, cattle and so on.Some scientists want to apply the methods used in that clon

3、ing animals to produce skin, organs, and other body parts for humans. One of these methods involves taking adult cells from the brain or blood and growing them into new tissues. Another more complex technique takes embryo cells and develops them into a wide variety of cell types and tissues. It is t

4、his planned use of human embryo cells that has resulted in controversy and criticism.The cloning of human cells provides the potential to find cures and get rid of diseases. The dream of some researchers is to create a Utopian world of good health. Others question whether it is right to “Play God“ i

5、n an attempt to cure the disabilities and diseases of this world.Some of the great hopes for cloning include the ability to perform transplants （移植），whenever they are needed, using cloned organs. For example, people with lung cancer may simply have their lungs replaced with healthy ones. Scientists

6、also look forward to the day when people in wheelchairs can walk again, and illnesses such as Alzheimer s and Parkinson s disease can be prevented.Many people fear the effects that cloning could have on our society. They imagine masses of identical people, and the production of “perfect” humans for

7、warfare or slave labor. We might even see headless human bodies being stored at hospitals for their aspare parts. With such possibilities for the 21st century, human cloning will no doubt continue to receive widespread attention.同步閱讀】Read the passage and tell whether the following statements are tru

8、e (T) or false (F).()1.Science is intended to save more lives even throughhuman cloning.()2.Scientists successfully cloned a sheep in the 1950s.()3.Cloning human cells can help cure diseases.()4. It s necessary to cure the disabilities and diseasesthrough cloning.()5. Nobody is concerned about the e

9、ffects of cloning on oursociety.【素養(yǎng)拓展】書面表達(dá)英語課上你班同學(xué)討論了克隆的利與弊。請你根據(jù)以下信息用英 語寫一篇短文介紹討論情況：大約35%的同 學(xué)認(rèn)為應(yīng)該進(jìn) 行克隆大約65%的同學(xué)認(rèn)為不應(yīng)該進(jìn)行克隆理1由,.克隆治療疾 ??；.克隆滅絕物 種；.增加農(nóng)業(yè)產(chǎn) 量理由.引發(fā)道德問題；.基因多樣性喪失,不利于生物生存；.克隆技術(shù)如果被壞人利用就會非常危險注意：1.詞數(shù)100左右；.可適當(dāng)增加細(xì)節(jié)，以使行文連貫；.短文開頭已給出，但不計入總詞數(shù)。參考詞匯：基因geneWe ve had a discussion about whether cloning shou

10、ld be carried out. Opinions are divided on the question.Period 1 Reading Comprehension【教學(xué)目標(biāo)】閱讀課文，明白克隆的歷史及動物克隆的過程。.學(xué)會分析課文中的長難句，歸納文章的主旨，并能理解語篇中的重 要細(xì)節(jié)。經(jīng)典美句The fact that she seemed to develop normally was very encouraging.Then cace the disturbing news that Dolly had become seriously ill.Although at pres

11、ent human egg cells and embryos needed for cloning research ere difficult to obtain.However, scientists still wonder whether cloning will help or harm us and where it is leading us.行式仿寫.我們聽到消息說我們隊贏了。（根據(jù)美句1, that引導(dǎo)同位語從句） We heard the news.箭“嗖”地一下飛到了空中。（根據(jù)美句2,完全倒裝）Up into the air.據(jù)說他很難相處。（根據(jù)美句3, “sb /

12、 sth +be+adj. +to do”結(jié) 構(gòu)）It is said that.我不在乎你明天是否來。（根據(jù)美句4, whether引導(dǎo)賓語從句）I don t care tomorrow.I Pre-readingBrainstorming:Try to finish the blanks to understand cloning.A clone is an animal or 1. produced naturally or artificially from the cells of another animal or plant and is exactly the same as

13、 it.What is a clone?（續(xù)表）How is a cloneproduced?What benefitscanhumans gainfrom cloning?The cloning of plants is relatively 2. It can be done by taking cuttings or letting the plant produce its own runners （3. cloning）. The cloning of animals is more complicated. It was not achieved until 1996.Medica

14、l cloning can help cure serious 4. （such as Parkinson s disease or Alzheimer s disease）. It can help infertile （不育的）people have 5.II. While-reading.Fast reading:Read the passage fast and then answer the following questions.(1)What do you think the passage is about?(2)Find out the main idea of each p

15、aragraph.(3)What are the problems or dangers of cloning?(4)What does the word “it” in the sentence “It became controversial (Line 20)“ refer to?(2 words)(5)Which sentence has the similar meaning to the following sentence in the passage?It was an inspiring fact that Dolly the sheep appeared to develo

16、p normally.Careful reading:Read the following statements and decide whether they are true (T) or false (F).()(1)Gardeners can make a lot of money by cloning plants.()(2)Cloning plants is as complicated as cloning animals.()(3)Dolly the sheep was the first successful clone of amammal.()(4)Natural clo

17、nes happen in both animals and plants.Post-reading:Fi 11 in the following chart with only one word for each blank.Topic CLONING: WHERE IS FT LEADING US?What is is a way of making an 1. copy of another cloning animal or plant.(續(xù)表)Applicati onApplicati onThe first successfu 1 case of cloningDivided vo

18、ices2. use it to produce commercial quantities of plants.It is 3. for research on new plant species and for medical research on animals. Scientists made a 4. in 1996 when the first cloning Dolly the sheep was given birth, which appeared to develop 5. at first but fell 6. later. The sheep lived 7. th

19、e length of the life of the original sheep, which raised a storm of 8.Cloning can be used to 9. serious illnesses and even to produce human beings.The health of the cloned animals may be a major difficulty for all cloned animals. And it remains to be seen whether cloning will help or 10. us and wher

20、e it is leading us.(Pll)The fact that she seemed to develop normally was veryencouraging.()番翻譯句中的that是連接詞，引導(dǎo)從句,用來說明的內(nèi)容?！咀兪接?xùn)練】I.句式仿寫他被大學(xué)錄取的消息很快傳遍了全村。H.單句填空There is clear evidence the most difficult feeling of all to interpret is bodily pain.(Pll)Then came the disturbing news that Dolly had become ser

21、iously ill.翻譯：本句是語序?！咀兪接?xùn)練】 I.句式仿寫孩子們沖了出來。 H.單句填空When he looked forward, he found in the distance (run) a rabbit.(P12)Although at present human egg cells and embryos needed for cloning research are difficult to obtain, newspapers wrote of evil leaders hoping to clone themselves to attain their ambiti

22、ons.翻譯：(2)該句使用的是sth /sb +be+a力+to do”結(jié)構(gòu)，在該句型中不定 式用形式表示意義。如后面不定式中的動詞是不及物動詞,那么要加上 適當(dāng)?shù)慕樵~或副詞?！咀兪接?xùn)練】.句式仿寫他的 號碼很容易記。由于洪水,這個城鎮(zhèn)里的水已不適合飲用。那邊的那個箱子搬起來很重。.單句填空I like getting up very early in summer. The morning air is so good (breathe).I.翻譯句子.門翻開了，校長進(jìn)來了。(使用倒裝句).我喜歡喝茶，而她喜歡喝咖啡。(while)3你認(rèn)為這水喝起來平安嗎？ (sth /sb +be+ad

23、j. +to do).不管是他本人來還是派人來并不重要。(whether引導(dǎo)主語從句).我們聽到消息說會議推遲到下周了。(that引導(dǎo)同位語從句) n.語法填空Cloning is a way of making an exact copy of an animal or a plant. It has two major uses. Firstly, it is valuable 1. research on new plant species and for medical research on animals. 2., it is a difficult task to underta

24、ke.On the one hand, the whole scientific world followed the progress of the first successful clone, Dolly the sheep. The fact 3. she seemed to develop normally was very 4. (encourage). Then came the disturbing news that Dolly was 5. (serious) ill. Altogether Dolly lived six and a half years, 6. is t

25、he half length of the life of the original sheep.On the other hand, Dolly s appearance 7. (raise) a storm of objections 8. had a great impact on the media and public imagination. It suddenly opened everybody s eyes to the possibility of using cloning to cure serious illnesses and even 9. (produce) h

26、uman beings. However, scientists still wonder 10. cloning will help or harm us and where it is leading us. III.主題活動Discussion: Have all the class discuss the famous saying and present in their own words.1. What spirit can we find in Helen Keller s famous saying? 2.As a student, what should we learn

27、from the saying?答案匯總背景材料閱讀 同步閱讀1.F 2, F 3. T 4. F 5. F 素養(yǎng)拓展We ve had a discussion about whether cloning should be carried out.Opinions are divided on the question.About 35 percent of the students think there are more advantages. First of all, cloning can be used in the medical field.SclenlisLs can c

28、lone heal thy cells, which can help doctors cure patients. Also, cloning extinct animals has always excited scientists. Another advantage of it is increasing agricultural output, which is of great importance in our country.However, about 65 percent of the students hold the opposite view. For example

29、, there is doubt about whether cloning ismoral. Furthermore, diversity in genes is essential for animals to overcome diseases. A group of cloned animals would all have the same arrangement of genes. What s worse, if the technology of cloning is taken advantage of by evil leaders, it will be very dan

30、gerous.Period 1 Reading Comprehension知識記憶與理解課程預(yù)習(xí)檢測that our team had won 2. went the arrow 3. he is hard to get along with 4. whether you will come or not思維探究與創(chuàng)新閱讀理解探究I . 1.a plant 2.easy 3. natural 4.diseases 5.babies. (1)This passage is about the producing of cloning, and animal cloning raises argu

31、ments and scientists are not sure about its future.(2)Paragraph 1:Cloning is a way of making an exact copy of another animal or plant.ParagraphParagraphParagraphParagraph First,2:Cloning has two major uses.3:The problems of Dolly.4:The effect of Dolly.5:It is forbidden to clone human.the cloned anim

32、als have the same illness of old animals and the same goes with the other species. Second, the cloned animals have short life.(4)Dolly s appearance.(5)The fact that she seemed to develop normally was very encouraging.(1)T (2)F (3)T (4)TIII. 1. exact 2. Gardeners 3. valuable 4. breakthrough5. normally 6. ill