英语选修6Module_5课件_Vocabulry_and_reading(1).ppt

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1、外研版外研版高二年级高二年级(选修选修6)Module 5Vocabulary & readingCloning and DNAWork in pairs. Look at the title of the passage and the words in the box. Decide which ones youre likely to see.acid bacteria embryos enzyme experience gene human tissue organism plant psychological stem cell structure upbringingWork in

2、 pairs and answer the questions.What is_?1. DNA the fundamental component of life Scannig:2. a clonean organism which is genetically identical to another 3. a stem cell 4. the genetic make-up of a person or a plant a cell that can develop into every other type of cell the particular genes that give

3、a person their physical characteristics 5. bacteria very small organisms that cause diseases chemicals formed in the body 6. an enzyme Paragraph 1(1953) Into the text:Read the passage again and find the paragraphs which describe:a. When the structure of DNA was discoveredParagraphs 2,3(take the DNA

4、from a single cell to create another identical individual) b. How to clone something c. four possible reasons for cloningParagraphs 4(as an alternative treatment for couples who find it difficult to have children), 5(to reproduce the talents of exceptional people), 6(to obtain a supply of stem cells

5、), 7(to help farmers grow resistant crops) Paragraphs 4(a clone would be under unknown psychological pressure), 5(a clone may possess new vices instead of existing virtues), 6(embryos made form clones would be wasted which some people would find unacceptable), 7(to rely on a few cloned animals or cr

6、ops would restrict biodiversity)d. the disadvantages of cloningRead the text again and decide whether the following statements are true (T) or false (F).1. The science of genetics was discovered by two scientists, Watson and Crick at Cambridge University. ( )2. Stem cells in embryos can help someone

7、 recover from a disease, repair human tissue and so on. ( )FT3. The child who was a clone of one of his parents would have psychological pressure throughout his childhood. ( )T 2. A pattern of chemicals within the cell of a living thing that controls what it is likeAccording to the definition, find

8、the proper words.Words revision: 1. thin enough to be seen throughgene transparent3. The same or exactly alike4. Be likely to cause argument or disagreement5. Can be chosen freely6. Bad habit or personal quality7. Can change or be changed to adapt to new needsidentical controversial optionalvice fle

9、xible 8. Put into force by orders or by the law9. Useful or simple to use 10. The natural watery liquid produced in the mouthcompulsory handy saliva 1. Its certainly true that in 1953, two scientists discovered the structure of the acid DNA.2. It was in 1866 that Mendel first recorded the results of

10、 growing pea plants.Key sentences: 3. He discovered a procedure to use enzymes to unzip the DNA and cut out a sequence of genes.4. A clone is an organism which is genetically identical to another one.5. A prize cow which resist bacteria or disease, or to sow a cloned crop which can resist rot or pes

11、ts.6. To rely on a few cloned animals or crops would restrict the biodiversity of the breed.Language points:1. A clone is an organism which is genetically identical to another one.1) 同一的；同样的同一的；同样的 We are identical in our views of what should be done. 我们双方对应当怎么办的看法是一致的。我们双方对应当怎么办的看法是一致的。 This is the

12、 identical hotel that we stayed in last year.这就是我们去年住过的那家旅馆。这就是我们去年住过的那家旅馆。2) (常与常与with连用连用) 完全相同的完全相同的 These two designs are almost identical. 这两种式样几乎完全相同。这两种式样几乎完全相同。 My opinion is identical with his. 我的意见和他的意见相同。我的意见和他的意见相同。identify v.identify sb / sth as sb / sthidentify sth with sth 认为某事物与某事认为某

13、事物与某事物等同物等同She identified the man as her brother.她把那个男人认成了他的兄弟。她把那个男人认成了他的兄弟。One cant identify happiness with wealth. 幸福和财富不能混为一谈。幸福和财富不能混为一谈。 1). 意为意为“抵抗；反抗；抵抗；反抗；”。如：。如： The rebel army resisted the police. 叛军与警察对抗。叛军与警察对抗。 The laborers prepared to resist and to overthrow this Government. 劳动人民准备反抗推

14、翻这个政府。劳动人民准备反抗推翻这个政府。2. A prize cow which resist bacteria or disease, or to sow a cloned crop which can resist rot or pests. 2). 意为意为“抵御；阻止；抗；耐抵御；阻止；抗；耐”。如：。如： For months the company has resisted changing its accounts system. 数月以来，这家公司阻止改变它的帐数月以来，这家公司阻止改变它的帐目。目。 This metal resists rust. 这种金属是防锈的。这种金

15、属是防锈的。 3). 意为意为“经得住；不屈从经得住；不屈从”, 常用于否常用于否定句。如：定句。如： Jill couldnt resist making jokes about his boldness. 吉尔忍不住拿他的秃顶开玩笑。吉尔忍不住拿他的秃顶开玩笑。 She couldnt resist sweets. 她看到甜食就想吃。她看到甜食就想吃。词汇拓展词汇拓展 resistance n. （不可数）抵抗，对（不可数）抵抗，对抗；反对抗；反对, 抵抗力抵抗力, 阻力阻力 (与与to连用连用)resistant adj. 抵抗的，有抵抗力的抵抗的，有抵抗力的The demonstrat

16、ors offered little or no resistance to the police. 示威群众对警方没怎么抵抗。示威群众对警方没怎么抵抗。Rebel gunmen have put an end to armed resistance. 叛军停止武装抵抗。叛军停止武装抵抗。The firm has to overcome its resistance to new technology. 这家公司必须克服对采用新技术的阻力。这家公司必须克服对采用新技术的阻力。A healthy person offers more resistance to disease than a we

17、ak person.身体健康的人对疾病的抵抗力比身体弱身体健康的人对疾病的抵抗力比身体弱的人强。的人强。The seedlings are resistant to cold weather. 这些秧苗有抗寒力。这些秧苗有抗寒力。 随堂练习随堂练习根据下列各句句意及所给单词的首字母提根据下列各句句意及所给单词的首字母提示，写出该单词的正确形式。示，写出该单词的正确形式。1. The two words are i_ in meaning. That is, you can use one in place of the other.2. This is an o_ painting by Pi

18、casso, not a copy one.3. They lost their home and all their p_ in the storm.denticalriginalossessions4. They have o_ one million dollars from the government. Their next step is to find a business partner.5. This is a box with f_ height and width. It can expand to contain as much as five kilos.6. Tha

19、nks to the doctors timely treatment, he r_ his health soon.7. Membership of the club is r_ to men only. Women are not allowed in.btainedlexible ecovered estricted8. C_ education is education provided by governments, which children are required by law to receive.9. The box has a t_ plastic lid so you can see whats inside.10. The first step in the p_ for making a kite is to build a frame.ompulsoryransparent rocedure