新一代大学英语视听说教程1-U2--课件.ppt

Food and Health Unit 2 Warm up 01 Listening and Speaking 02 Viewing and Speaking 03 CONTENTS Project 04 1 Warm up Work in pairs on the following activities Read the food terms and the descriptions carefully Then match the descriptions with the terms Step 1 Warm up processed food Warm up 1 It is food that is grown or produced without synthetic 人造的 pesticides or chemical fertilizers 2 It is food that is specially treated to change color and keep fresh etc 3 It is food that is grown within a reasonable distance from where it is eaten It does not spend days or weeks to be transported and is therefore generally fresher 4 It is food that is produced from organisms that have had specific changes introduced into their DNA using the methods of genetic engineering 5 It is food that is not processed or refined or that is processed and refined as little as possible before being consumed It is food in its natural state organic food local food GM food whole food Work in pairs on the following activities List the foods that you ate for breakfast lunch and supper yesterday For each of them decide whether it is genetically modified local whole processed or organic Step 2 Warm up Reference answers Warm up BreakfastMuffinProcessed food BananaWhole food MilkLocal food Lunch RiceOrganic food Scrambled eggs with tomatoes Local food Sweet and sour porkLocal food SupperDumplingsLocal food Additional Activity Read the following quotes about healthy eating Try to explain the quotes with examples or your personal experiences 1 Those who think they have no time for healthy eating will sooner or later have to find time for illness Edward Stanley 2 The only way to keep your health is to eat what you don t want drink what you don t like and do what you d rather not Mark Twain Warm up Reference answers 1 Main points Healthy eating is not just about keeping a healthy weight it affects one s total state of well being Poor eating habits are linked to a large number of diseases such as heart disease stroke and diabetes My father for example always buys organic food even if it is more expensive He tries to ensure a healthy and balanced diet for the family 2 Main points To stay healthy you will have to eat those vegetables and fruits which you might not like as much as junk food You will have to get up early in the morning exercise regularly or take the stairs instead of the elevator In other words it takes some effort to be healthy Warm up 2 Listening and Speaking Topic One Genetically modified food 1 Listen to a conversation on GM food and decide whether the statements are true or false Write T for true and F for false Listening and Speaking Genetically modified food Listening and understanding 1 The man is in favor of GM food but the woman is against it 2 The woman thinks that she needs to do more reading on GM food 3 The man thinks that controls on GM food in most countries are loose 4 The man thinks that the woman is cautious about GM food 5 The woman does not like the fact that some food companies are using her for their experiments on GM food 6 The woman finally agrees with the man T F F F T F 2 Listen to the conversation again and complete the table with what you hear Listening and Speaking Genetically modified food Listening and understanding Arguments for GM foodArguments against GM food GM food is probably 1 than non GM food because there are 2 for GM food Genetic modification could be used to make 3 enriched with vitamins or bananas with vaccines GM food can be used to change the habitats of species and prevent them from becoming 4 GM food is unnatural and therefore potentially risky We haven t done enough research and GM food is responsible for the destruction of wildlife for example larks are rapidly 5 Some food companies will dominate the 6 even more than they do today if we start to rely on GM food GM food causes no end of damage to some plants and animals When a species dies out or mutates it has a knock on effect on the 7 Genetically modified food Listening and understanding safer tighter controls vegetables extinct decreasing in numbers poor countries whole ecosystem Listening and Speaking 3 Although GM food has been on supermarket shelves for over a decade there is still extensive controversy about it Work in two groups and hold an informal debate on the topic Is GM food beneficial You can base your argument on what you ve heard from the conversation your own experience and reasoning and what you ve learned from books newspapers or the Internet Listening and Speaking Genetically modified food Thinking and speaking Listening and Speaking Genetically modified food Thinking and speaking Arguments for GM foodArguments against GM food There have been a great number of studies tracking the effects of GM food on animals These studies indicate that GM food is safe to consume Farmers who grow GM crops use fewer environmentally damaging pesticides GM crops can have larger yields The increased yields of GM crops are essential to feedin。