新核心大学英语B版听说教程3Unit 3.ppt

1、Unit 3 Food Safety,In this unit you will: 1. learn about food safety; 2. familiarize yourself with the words and expressions related to the theme of the unit; 3. practice evaluating and judging information from lectures and learn to understand details, methods and attitudes; 4. enhance listening ski

2、lls through non-theme-related audio and video materials; 5. learn to use proper and appropriate expressions and sentence structures to give presentations.,Learning objectives,Part I Theme-Related Activities,Part II Listening Strategies,Part III Extensive Listening,Part IV Communication Skills,Part V

3、 Assessment Log,Part I Theme-Related Activities,Section I Lecture I,Section II Lecture II,Section III Lecture III,1. What do you know about food additives? 2. Do you think food additives should be totally banned?,Lead-in questions:,Unit 3 Part I Section I Lead-in questions,Word Bank,Unit 3 Part I Se

4、ction I Word Bank,Unit 3 Part I Section I Word Bank,Notes,Unit 3 Part I Section I Notes,1. European Union An economic and political association of European countries formed after World War II to reduce trade barriers and increase cooperation among its members. 2. Erythrosine Also known as Red No. 3.

5、 It is cherry-pink synthetic, primarily used for food coloring. 3. Green Dye # 1 It is a kind of synthetic used for food coloring. It has been withdrawn from use.,Task 1 Watch the video clip and then decide whether the following statements are true or false.,Task,Unit 3 Part I Section I Task 1,More

6、and more of the food we buy nowadays have been processed in different ways. 2. There is always a clear-cut distinction between additives and ingredients. 3. Additives are edible by themselves. 4. There is no agreement on the defi nition of food additives among countries. 5. The United States lists o

7、ver 2,000 compounds as food additives.,T,F,_,_,F,_,T,_,T,_,Task 2 Watch the video clip for the second time and then complete the following sentences.,Task,Unit 3 Part I Section I Task 2,1. Additives are in food and theyre not substances that youd normally eat by themselves. 2. The United States list

8、s over 2,000 compounds as food additives, which, elsewhere, might be described as or just as . 3. Some people worry , but this .,in fairly small quantities,processing agents,_,_,ingredients,_,whether additives are natural or artificial,_ _,has nothing to do with how safe they are,_ _,Unit 3 Part I S

9、ection I Task 2,4. Additives are put in food for , , , , and . 5. Youll notice when you look at the labels, that some processed foods contain a number of additives all . 6. In recent years food additives have been very closely. 7. To be on the safe side, such additives have either or from use.,taste

10、,_,appearance,_,texture,_,preservation,_,convenience,_,performing different functions,_,scrutinized,_,been restricted,_,withdraw,_,Unit 3 Part I Section I Task 2,8. The people who having problems from food additives are a small percentage of the population. 9. People with have to be very careful abo

11、ut what they eat. 10. Additives can also provide .,are susceptible to,_,food intolerance,_,essential vitamins and minerals,_ _,1. What are food additives? Define them in your own words. 2. Why are additives put in food? Do these additives exert a bad influence on peoples health? 3. Recall incidents

12、in China when food additives harmed peoples health and also share your opinions about these incidents. 4. What should the government do to prevent food additives from harming peoples health?,Task 3 Watch the video clip again and then have a group discussion based on the following questions. After th

13、e discussion, each group will give a brief report to the class.,Task,Unit 3 Part I Section I Task 3,【Script】,Script,Unit 3 Part I Section I Script,Word Bank,Unit 3 Part I Section II Word Bank,Unit 3 Part I Section II Word Bank,Unit 3 Part I Section II Word Bank,Unit 3 Part I Section II Word Bank,Not

14、es,Unit 3 Part I Section II Notes,1. What is the goal of the “Feed Bag” program? A. To give kids a free meal in school. B. To enable kids to be educated. C. To give kids nutrients. D. All of the above. 2. Which of the following statements about the problems of hunger and obesity in the U.S. is true?

15、 A. The U.S. is confronted with the problem of obesity instead of hunger. B. Obesity is a less serious problem than hunger in the U.S. C. The cases of hunger have decreased dramatically in the last 30 years. D. Both hunger and obesity have really risen in the last 30 years.,Task 1 Watch the video cl

16、ip and choose the best answer to the questions below.,Task,Unit 3 Part I Section II Task 1,3. Most of the hungry people in the world are . A. female subsistence farmers B. male subsistence farmers C. child subsistence farmers D. old subsistence farmers 4. What will finally lead to the solution of hu

17、nger and obesity? A. Changing the climate. B. Changing the way people think. C. Changing the food system. D. Changing food prices.,Unit 3 Part I Section II Task 1,5. What changes to processed foods that Ellen mentioned will help people change their food choices? A. Food companies processing new food

18、s. B. Food companies pricing negative externalities. C. Food companies adding nutrients to foods. D. Food companies removing additives from foods.,Unit 3 Part I Section II Task 1,1. What is the main idea Ellen wants to convey to the audience? 2. Why did people start the FEED company? 3. What kind of

19、 food do people mostly eat?,Task 2 Watch the video clip for the second time and give a short answer to each of the following questions.,Task,Both hunger and obesity arose from flaws in the food system.,They intend to raise money to provide school meals for children and raise awareness of the World F

20、ood Program.,_ _,_ _,Unit 3 Part I Section II Task 2,Processed food and fast food.,_,Unit 3 Part I Section II Task 2,4. Why does Ellen mention the cases of young children drinking soda?,The purpose is to show that there has been a profound shift in the food system, which has led to hunger and obesit

21、y.,_ _ _,Task 3 Watch the video clip again and speak for two minutes on the topic, using the following words and expressions. Prepare to answer one or two questions raised from classmates or the teacher after the presentation.,Task,Unit 3 Part I Section II Task 3,【Script】,Unit 3 Part I Section II Ta

22、sk 3,For Reference:,Unit 3 Part I Section II Task 3,Suggested questions and answers: 1. Why did Ellen take a job at the United Nations World Food Programme? 2. What is the goal of the Feed Bag program?,She realized there is a close connection between food and social security, so she took the job as

23、a way to try to address national security issues through food security issues.,_ _ _ _,The Feed Bag program aims to provide meals for school children, raise money, and raise awareness for the World Food Program.,_ _ _,Unit 3 Part I Section II Task 3,3. What has the company, FEED, achieved so far? 4.

24、 According to the lecturer, how did the U.S. contribute to the worldwide problems of hunger and obesity?,The company, FEED, provided school meals for children in Haiti after the earthquake and has provided 55 million meals to kids around the world so far, by selling 555,000 bags.,_ _ _ _,According t

25、o Ellen, the U.S. did not export advanced technologies for producing processed food and fast food to hunger-stricken areas like Africa, so that people there have no access to adequate food. However, the U.S. did export unhealthy ways of eating,such as the consumption of soda, to other countries so t

26、hat more people in the world are obese.,_ _ _ _ _ _ _,Unit 3 Part I Section II Task 3,5. According to the lecturer, how significant is the year 2010?,2010 is the end of the 30-year cycle, which is the birthday of the global food system. It is the thirtieth anniversary of GMO crops, the Big Gulp, Chi

27、cken McNuggets, high fructose corn syrup, the farm crisis in America, and the change in how agriculture is addressed internationally.,_ _ _ _ _,Unit 3 Part I Section II Task 3,6. As far as China is concerned, what has caused the problem of hunger and obesity?,As for China, I think the problem of hun

28、ger is attributed to the following aspects: 1) the unequal distribution of food: A good deal of food is wasted in some areas while a number of people are suffering from hunger in other areas; 2) the sale of farmland: Many farmers sell their family farms for a hefty profit to real estate developers;,

29、_ _ _ _ _ _,Unit 3 Part I Section II Task 3,3) the overconsumption of meat: Much farmland has been used to feed animals and poultry to meet peoples increasing demands for meat, so less land remains for planting staple crops.The problem of obesity can be attributed to the following: 1) eating fried f

30、ood: People eat too much unhealthy food, such as Kentucky Fried Chicken and pot stickers (锅贴); 2) lack of exercise: As the number of white-collar jobs has increased, Chinese people have become more sedentary.,_ _ _ _ _ _ _ _ _ _,Script,Unit 3 Part I Section II Script,Word Bank,Unit 3 Part I Section

31、III Word Bank,Unit 3 Part I Section III Word Bank,Notes,Unit 3 Part I Section III Notes,1. What is the largest contributor to atmosphere-altering gases? A. Livestock. B. Energy production. C. Animals. D. Junk food. 2. How much of all green-house gas is generated by livestock production? A. Nearly on

32、e-fifth. B. Over one-fifth. C. Less than one-fifth. D. Exactly one-fifth.,Task 1 Watch the video clip and choose the best answers to the questions below.,Task,Unit 3 Part I Section III Task 1,3. What has led to such diseases as diabetes and heart disease in the U.S.? A. Lack of exercise. B. Too much

33、 stress. C. An improper diet. D. Lack of dairy. 4. With which of the following points does the speaker agree? A. Calories in foods such as dairy and carbohydrates may prevent disease. B. The more meat and poultry people eat, the healthier they will be. C. The more plants people eat, and the less oth

34、er stuff people eat, the longer they will live. D. Animal products are indeed needed for ones health.,Unit 3 Part I Section III Task 1,5. Who would never let plants and whole grains supplant eating junk food? A. The government. B. The public. C. Consumers. D. Industry lobbyists.,Unit 3 Part I Sectio

35、n III Task 1,Task 2 Watch the video clip again and then arrange the following steps for creating the Pleo in the correct order. It may help to underline key words first.,Task,Unit 3 Part I Section III Task 2,generate more greenhouse gas than transportation. is one of the biggest culprits in land deg

36、radation. enable people to live longer. Livestock use more antibiotics than people do. should supplant eating junk food so that peoples health can be promoted. Animals is overconsumed by people so that diseases like diabetes and heart disease are more prevalent in the U.S. Plants are not advocated b

37、y industry lobbyists. have been marketed heavily, creating unnatural demand.,Livestock,_,Livestock,_,Plants,_,Livestock,_,Plants,_,Livestock,_,Plants,_,Animals,_,【Script】,Script,Unit 3 Part I Section III Script,Part II Listening Strategies,Understanding Lectures: Evaluating Information (Understandin

38、g Details, Methods, and Attitudes),Understanding Lectures : Evaluating Information (Understanding Details, Methods, and Attitudes) Guided by a general idea of what the lecture will be about, learners move on to evaluate and judge what the speaker says, distinguishing important ideas from less import

39、ant ones, main ideas from subordinate ones, e.g. an idea from an illustration or example. In this multi-tasking process, learners must have in mind the specific point the lecturer is explaining and the way he explains it by looking for clues in his words. For example, 1. When the lecturer says “let

40、me repeat ”, he is emphasizing that this point is important. 2. In our last class, we were talking about the tar pits at Brancho La Brea in Los Angeles, and uh,Unit 3 Part II,what a great source of fossils, fossil information these, uh, tar pits have been. There have been well, millions, literally m

41、illions of fossils, of bones of Ice Age mammals that were, uh, trapped in the asphalt ponds there. Its an ideal place for fossil hunters the sticky asphalt trapped the animals, and then the asphalt helped preserve their bones. Of course, um, tar pits are not the only place to look for fossil bones.

42、Many are found in stream beds, lake beds, deserts. Another good place for paleontologists to look for remains is in caves. There are really two types of caves where fossils can be found. One type is the carnivore den, places where carnivores lived. A good example of a carnivore den was, uh, discover

43、ed at Agate National Monument in Nebraska. Now, the second type of cave where you find fossils is called a natural trap.,Unit 3 Part II,In example 2, the lecturer introduces the main idea of his lecture by reviewing the last lecture, the “asphalt ponds, an ideal place for fossil hunters” and shiftin

44、g naturally to other places by “Of course, um, tar pits are not the only place” and then pursuing what is “another good place”. To elaborate on fossils in caves, the lecturer uses classification (one type is )and exemplification (a good example of a carnivore den was ). To put it in another way, whi

45、le listening, learners are trying to understand the lecturers way of delivery, for example, how he begins the lecture (the speaker may start with a question, a gesture, an interesting or unusual story or fact, a prop, or personal experience), how he presents ideas (e.g. exemplification, classificati

46、on, comparison and contrast), and how he concludes the lecture.,Unit 3 Part II,While learners are listening, they may ask themselves the following questions to keep on track with the flow of the lecture. Typically asked questions: How does the professor introduce the idea of ? What is the main idea/

47、 subject of this lecture? What does the lecture mainly concern? What does the speaker say about ? According to the lecture, which of the following is NOT true/ mentioned? How does the speaker explain the concept of ? What is the speakers opinion about ? What does the professor imply about ? What can

48、 be inferred from this lecture about ?,Unit 3 Part II,Word Bank,Unit 3 Part II,Unit 3 Part II,Unit 3 Part II,Notes,Unit 3 Part II,Task Watch the video clip and give a short answer to each of the following questions and complete the table.,Task,Unit 3 Part II Task,1. How does the professor start his

49、lecture? 2. What do the arguments elicited by the professor reveal? 3. What will the professor most likely discuss in the next lecture? 4. How does the professor conclude his lecture?,With thought-provoking hypothetical scenarios.,_,Consequentialist and categorical moral principles.,_,The contrast b

50、etween Consequentialist and Categorical moral principles.,_ _,By explaining the goal of the course: to awaken recklessness of reason.,_ _,Unit 3 Part II Task,the consequences of an act,_,utilitarianism,_,English political philosopher,_,certain absolute moral requirements, certain categorical duties

51、and rights,_ _ _ _,German philosopher,_ _,5. In this lecture, the professor introduces two moral principles. Complete the following table to clarify the differences between them.,【Script】,Script,Unit 3 Part II Task,Part III Extensive Listening,I News Reports,II Interview,III Speech,IV Conversations,V Passage Listening,VI Compound Dictation,Word Bank,Unit 3 Part III I News Reports I,Unit 3 Part III I News Reports I,1. What is market size of organic products in the U.S.? A