Unit 3 Fit for life Reading 课件- 高二英语牛津译林版（2020）选择性必修第二册

1、ReadingAdvances in medical science are happening quickly these days. The lecture below is given by abiologist about the new possibilities that gene research can bring. Before you read the lecturetranscript, think about the following questions: What advances in medical science have you heard about? W

2、hat do you know about genes?ReadingGood afternoon, ladies and gentlemen. Thank you all for coming to this lecture. Over the course of my career, I have seen many wonderful scientific developments, but none are as game-changing as genome editing. I am full of excitement about the possibilities this s

3、cientific advance can bring and I hope to share my excitement with you today.As many of you may already know, genes play a critical role in shaping our lives. Everything from the colour of our eyes to our talent for maths depends on genes. The complete set of genes inside a cell or a living being is

4、 called a genome. Our own personal genome carries all the information needed to make us grow and develop. It also contains information that helps determine our lifespan and affects our chances of contracting certain diseases. Some people, for example, carry a gene that makes them more likely to catc

5、h a certain virus or develop a particular form of cancer.Geneticists have been trying to identify which genes relate to which diseases, as they believe genome editing is an effective means of disease treatment and prevention. It allows geneticists to make changes to the genome by correcting, adding,

6、 deleting or replacing specific parts of the genetic material. In the near future, geneticists hope to apply this technology to treat a wide range of healthproblems. Soon we may be able to use such treatments to restore a blind persons vision or give someone who was born deaf an excellent sense of h

7、earing. Ultimately, this new technology might even make it possible to prevent diseases from ever developing by correcting abnormal genes early on. Genome editing, serving as a new weapon in the fight against diseases, will lead to a fundamentalchange in our approach to health care.As the technology

8、 continues to develop at a fast pace, however, questions arise about how to use it appropriately. Should we restrict our use of this technology to the treatment and prevention of diseases? Should we prohibit geneticists from using it to enhance healthy bodies? One day soon we will be able to use gen

9、omeediting to increase the human resistance to colds and flus, to make people taller, to help their muscles develop faster, to sharpen all of their senses or to make them more intelligent. We will also be able to select specific characteristics for children before they are born, creating what some h

10、ave called “designer babies”. However, is this a good thing? What consequences might it have? Philosophers, geneticists and government officials have all started to wrestle with such moral issues. We have to figure out how to keep the technology from running wild. This means putting appropriate cont

11、rols in place to make sure that genome editing will work to our advantage. Without them, genome editing could be as dangerous as a car out of control.There is still much to be explored and debated on the subject of genome editing. Despite the public argument over this technology, its possibilities h

12、ave been creating much excitement throughout the entire medical community and beyond. Without doubt, genome editing is one of the greatest inventions in the history of science. Thank you for listening.A Understanding the textA1 Read the lecture transcript and complete the chart below with the main i

13、dea of each paragraph.Genes can shape our lives. Genome editing will lead to a fundamental change in our approach to health care.Genome editing should be used appropriately.Genome editing has bright prospects ahead.A2 Read the lecture transcript again carefully and answer the following questions.1 W

14、hat information does our personal genome carry?2 How can geneticists make changes to the genome?3 How might genome editing make it possible to prevent diseases from developing?4 What is a “designer baby”?5 What does the lecturer compare uncontrolled genome editing to?It carries all the information n

15、eeded 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. Geneticists can correct，add，delete or replace specific parts of the genetic material.Genome ed

16、iting makes it possible to prevent diseases from ever developing by correcting abnormal genes early on.A “designer baby” is a baby whose specific characteristics have been selected before he is born.The lecturer compares it to“a car out of control”.A3 In pairs, discuss the following questions.1 How

17、does the lecturer feel about genome editing? Find evidence from the lecture transcript to support your opinion.2 The lecturer mentions that one day we will be able to create “designer babies”. What do you think of “designer babies”?3 What controls can we put in place to make sure that genome editing

18、 will work to our advantage?B Building your languageB1 The news report below is about the discovery of genetic markers that are tied to lifespans.Complete the news report with the correct forms of the words and phrases in the box below.This week, a team of scientists based in Switzerland announced t

19、he discovery of sixteen genetic markers that relate to human lifespans. (1) _, the discovery is an important finding in the field of genetics. For years, scientists have been working to (2) _ specific genetic markers that are connected with a long lifespan. Until recently, only two such markers were

20、 known to the scientific community.pace means identify wrestle with cell fundamental affect without doubtWithout doubtidentifyGenes play a critical role in overall health. Every (3) _ in the human body contains genetic information. Everything from the ageing process to the development of deadly dise

21、ases, such as cancer, is tied to an individuals genetic make-up. However, scientists have long been (4) _ the question about which genetic markers indicate a short or long lifespan. The discovery by the research team may quicken the (5) _ of the study on genes and human lifespans, and eventually hel

22、p answer this question.Scientists say that locating these sixteen genetic markers will greatly improve their understanding of how genes (6) _ lifespans. These genetic markers may eventually function as a (7) _ of targeting the specific genes connected with lifespans. This could significantly enhance

23、 peoples chances of living to a ripe old age. According to some scientists, it could make a(8) _ change to the future of human life.cellwrestling withpaceaffectmeansfundamentalB2 The lecture transcript uses a number of words related to “gene”. Look at the examples, think of more word families with a

24、 similar pattern and fill in the table below.-(t)ics/-(o)logy: politics，political，politician linguistics，linguistic，linguist physics -(t)ic/-al: physical，physicist mathematics，mathematical-ist/-ian: mathematician electronics，electronic，electrician economics，economic，economist B3 The lecture transcript uses different structures with “as”