Unit 3 Fit for life Welcome to the unit & Reading (I） ppt课件-（2020）新牛津译林版高中英语选择性必修第二册.pptx

1、Unit 3Fit for lifeWelcome to the unit &Reading(I)Medical professionals work hard to keep us healthy. Look at the pictures below and discuss the following questions in pairs.a. A surgeon performs operations.b. A physician is trained in general medicine.c.A chemist prepares and sells medicines in a sh

2、op.d. A dentist specializes in the care of peoples teeth.bdcaWhat do you know about genes?Why do you look like your father or mother?Step 1 Lead-in What do you know about genes?A gene is a small section of DNA which controls a particular quality in a living thing that has been passed on from its par

3、ents.Whats going to be talked about in the lecture, according to the title?PredictionStep 2 Pre-readingPlease find the topic sentences of each paragraph.Step 3 While-readingPay attention to the first sentence and the last sentence!: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

4、 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 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

5、 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 SECONDSIntroductionPara.1: Genome editing brings many exciting possibilities.Main bodyPara.2:Para.4:Para.5:ConclusionGenes play a critical role in shaping our lives.Para.3:Genome editing can help with disease treatmen

6、t and prevention.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.Step 4 Careful ReadingPara.2Main Idea.AspectsGenes play a critical role in shaping our lives.The of eyes an

7、d of math.Make our and . Helps determine and affects our chances of .colourour talentgrowdeveloplifespancontracting certain diseasesPara.2Pay attention to the key words！1. What information does our personal genome carry?1. What information does our personal genome carry?It carries all the informatio

8、n needed to make us grow and develop from the colour of our eyes to our talent for maths; it also contains information that helps determine our lifespan and affects the chances of contracting certain diseases.Para.23.How might genome editing make it possible to prevent diseases from developing?Para.

9、 3By correcting abnormal genes early on.2.How can geneticists make changes to the genome? By correcting, adding, deleting replacing specific parts of the genetic material.4. What is a “designer baby”?Para. 4A “designer baby” is a baby whose characteristics have been specifically selected before it i

10、s born.5 .What dose the lecturer compare uncontrolled genome editing to?A car out of control.What do you think of “designer babies”?Step 5 Post-readingPossible answer:Our group are for the designer baby. Because we think that.Step 6 Summary Genome editing is one of the greatest inventions in the history of science , and we should put appropriate controls in place to make sure that genome editing will work to our advantage. 1. Read the text fluently and underline the difficult words and phrases.