Unit3 Welcome to the unit & Reading（ppt课件） (2)-新牛津译林版（2020）《高中英语》选择性必修第二册.pptx

1、In this unit,you are going to:B5 U3 Fit for lifeWelcome to the unit and Reading Im not feeling well.Ive come down with the flu.I have to go to see a doctor.Which speciality do I need to register with?Lets help her learn some medical professionals.Could you name some medical jobs?a surgen(外科医生)a phys

2、ician(内科医生)a chemist(药剂师)a dentist(牙科医生)a psychologist(心理医生)an eye doctor(眼科医生)a pediatrician(儿科医生)an orthopedic surgeon(骨科医生)a dermatologist(皮肤科医生).(P29)Look at the pictures below and match the pictures with options.a.A surgeon performs operations.b.A physician is trained in general medicine.c.A ch

3、emist prepares and sells medicines in a shop.d.A dentist specializes in the care of peoples teeth.bdcaA good medical professionaldeterminationknowledgecommunicationcompetence.rich experiencecarefulnesshard workkindnessdevotionAfter close examine,it is evident that you get this disease directly or in

4、directly linked with genes.I have no idea what the gene is.It couldnt be better.To help you know genes,I will give a lecture transcript given by a biologist about genes.Pre-readingWhat do you know about genes?small sections of DNA control a particular quality(passed on from parents)Watch the video a

5、nd fill in the blanks.A gene is a special stretch(片，片，段段)of _,not the entire strand of_,just a segment(部分部分)that _ for something.Each gene is like a(n)_ recipe(处方处方)which usually tells us how to make a protein(蛋白质蛋白质)or group of proteins.Different creatures have different _,but all genes are written

6、 in the same basic DNA language of _.Watch the video and fill in the blanks.A gene is a special stretch(片，段片，段)of _,not the entire strand of_,just a segment(部分部分)that _ for something.Each gene is like a(n)_ recipe(处方处方)which usually tells us how to make a protein(蛋白质蛋白质)or group of proteins.Differen

7、t creatures have different _,but all genes are written in the same basic DNA language of _.DNADNAcodesuniquegenesAs,Cs,Ts and GsWhats going to be talked about in the lecture,according to the title?Prediction Pre-readingPlease find the topic sentences of each paragraph.Pay attention to the first sent

8、ence and the last sentence!While-reading:03 00MINUTES SECONDS3 2 1 03 2 1 0 7 6 5 44 59 8 3 2 1 0 7 6 5 4 9 8 3 2 1 0 7 6 5 4 9 8 3 2 1 0 7 6 5 4 9 8 3 2 1 0 7 6 5 4 9 8 3 2 1 0 7 6 5 4 9 8:02MINUTES SECONDS3 2 1 03 2 1 0 7 6 5 44 59 8 3 2 1 0 7 6 5 4 9 8 3 2 1 0 7 6 5 4 9 8 3 2 1 0 7 6 5 4 9 8 3 2

9、1 0 7 6 5 4 9 8 3 2 1 0 7 6 5 4 9 8:01MINUTES SECONDS3 2 1 03 2 1 0 7 6 5 44 59 8 3 2 1 0 7 6 5 4 9 8 3 2 1 0 7 6 5 4 9 8 3 2 1 0 7 6 5 4 9 8 3 2 1 0 7 6 5 4 9 8 3 2 1 0 7 6 5 4 9 8:00MINUTES SECONDSPlease find the topic sentences of each paragraph.While-readingIntroductionGenome editing brings many

10、 exciting possibilities.Main bodyGenes play a critical role in shaping our lives.Many people are concerned about how to use genome editing appropriately.Despite the public argument,genome editing is one of the greatest inventions in the history of science.ConclusionGenome editing can help with disea

11、se treatment and prevention.Para.1Para.2Para.3Para.4Para.5ConclusionGreetingTopicIntroductionMain bodyMain bodyIntroductionMain bodyGreetingtopicTopic sentencesConclusionExamplesClosingCareful ReadingMain Idea.AspectsGenes play a critical role in shaping our lives.The of eyes and for math.Make us an

12、d .Help determine and affects our chances of .colourour talentlifespancontracting certain diseasesgrowdevelopPay attention to the key words！1.What information does our personal genome carry?It carries all the information needed to make us grow and develop;it also contains information that helps dete

13、rmine our lifespan and affects the chances of contracting certain diseases.（L9-11）2.What can we infer from paragraph 2?A.Talented people have more genes.B.Genome needs information to grow.C.Genome exists only in human cells.D.Our lifespan is related to our gene.3.How can geneticists make changes to

14、the genome?By correcting,adding,deleting or replacing specific parts of the genetic material.(Para.3 L16-17)4.What do people want genome editing to be used for?A.Preventing and curing diseases.B.Improving the efficiency of drugs.C.Restoring the eyesight of the blind.D.Changing characters of human ra

15、ce.5.What does the lecturer compare uncontrolled genome editing to?A car out of control.6.What is a“designer baby”?7.Whats the speakers attitude to genome editing?A.Doubtful.B.Worried.C.Positive.D.Vague.Despite the public argument over this technology,its possibilities have been creating much excite

16、ment throughout the entire medical community and beyond.Without doubt,genome editing is one of the greatest innovations in the history of science.A“designer baby”is a baby whose characteristics have been specifically selected before it is born.The lecturer mentions that one day we will create a“desi

17、gner baby”,What do you think of designer babies?Critical thinkingWhat do you think of“designer babies”?Post-readingPossible answer:Our group are for the designer baby.Because we think that.1.Designer babies can be perfectly healthy.2.Designer babies can be stronger and cleverer than ordinary babies.

18、3.Designer babies help further the cause of science.4.Designer babies may have substantially longer lifespan.5.Designer babies can maintain a healthy gender ratio,the balance of males and females.List of Pros of Designer Babies1.Designer babies will not be a success story all the time.2.Designer bab

19、ies can cause a rift in the social balance.3.Designer babies would be manufactured so there would be no individuality.List of Cons of Designer BabiesA Chinese researcher,He Jiankui,shocked the world two weeks ago when he revealed that the worlds first genetically edited babies had been born.Jiankui

20、claimed to have edited embryos(胚胎)before implanting(移植)them into the mother.Jiankui used a easy gene-editing technology to disrupt the gene for CCR5.He claimed that disruption of CCR5 would ensure that these babies would be protected from contracting HIV infection.Since his bold announcement via You

21、Tube,the scientific community at-large both in the United States and in China has strongly condemned this work as deeply unethical and dangerous.（2018 Natures 10:Ten people who helped shape the science stories of 2020）What controls can we put in place to make sure that genome editing will work to ou

22、r advantage?Post-reading Governments around the world should work together to make laws and regulations about when genome editing can and cannot be used.First,these laws and regulations should cover various aspects of genome editing,such as ethical issues and security,and they may have to be introdu

23、ced at multiple levelsglobal,national and even regional.Second,genome editing equipment needs to be strictly controlled so that it does not get into the wrong hands.Finally,governments,scientists,stakeholders and the public need to work together to enforce appropriate usage of genome editing.The app

24、lication of these laws regarding genome editing will only be successful if all parties concerned cooperate.We should use genome editing appropriately.Without appropriate controls,genome editing could be as dangerous as a car out of control.Summary Genome editing is one of the greatest inventions in

25、the history of science,and we should put appropriate controls in place to make sure that genome editing will work to our advantage.P33 B1 Complete the news report with the correct forms of the words and phrases in the box below.B1Without doubtidentifycellmeansaffectpacewrestling withfundamentalWhat do you think of designer babies?Homework