2014年秋英语译林牛津版必修5学案：Unit3ScienceandnatureProject.doc

第  PAGE 10 页 共  NUMPAGES 10 页 Unit 3 Science and nature Project Step 1 Lead- in Compare some scenery. (pictures and a section of video ‘2012’.) Are you horrified by some of the scenes? Are you afraid that something similar may happen in the future? What’s your opinion towards the relationship between human beings and nature? As a result of mankind and technology, natural resources have been seriously affected and natural disasters attack us fluently. Step 2 Reading: Man and nature 1. Read the article and give the main idea for each paragraph. Paragraphs Main idea Paragraph 1?Human have carelessly______ the environment. Paragraph 2__________towards the problem. Paragraph 3?Both developed and developing countries should ______ ________________________________.Paragraph 4?Humans can only really win by________________ 2. Read it again and answer the following questions. 1) What have people done to nature? ____________________________________________________ 2) If we continue in this way, what might happen? ___________________________________________________ 3) What did developing nations do decades ago? What are they concerned about now? ___________________________________________________. 4) What are poorer nations doing now? What is their purpose of doing so? ___________________________________________________ 3. Discussion: Do you think the problem of humans winning and nature losing can be settled? If so, can you suggest some solutions? Step 3 GM food: hope or danger? 1. Show some pictures to the students. Are they delicious? They have a taste of rose and lemon. Do you believe it? GM food: hope or danger? 2. What is GM food? GM food refers to the food produced using gene technology. Actually, humans have been genetically modifying the animals and plants around us for many centuries. Scientists have been trying to use selective breeding techniques to create many things. By far, the most co