新世纪大学英语综合教程第三版第4册第一单元ppt

2 Man is not only a dweller in nature, he also transforms it. Humanity converts nature’s wealth into the means of the cultural, historical life of society. Man has subdued and disciplined electricity and compelled it to serve the interests of society. Not only has man transferred various species of plants and animals to different climatic conditions, he has also changed the shape and climate of his environment and transformed plants and animals.
Part Paras. I 1-2
Main Idea
Man lives in the realm of nature. He is connected with nature by “blood” ties and he cannot live outside nature.
As society develops, man tends to become less dependent on nature directly, while indirectly his dependence grows because it is increasingly difficult to obtain irreplaceable natural resources for the needs of production. At present Mother Nature is being exhausted in resources, contaminated by synthetic products, and troubled by ecological imbalance. The previous dynamic balance between man and nature and between nature and society as a whole has shown ominous signs of breaking down. The solution to man-nature relation lies in rational and wise organization of both production itself and care for Mother Nature by all humanity.
3 As society develops, man tends to become less dependent on nature directly, while indirectly his dependence grows. Our distant ancestors lived in fear of nature’s destructive forces. Very often they were unable to obtain the merest daily necessities. However, despite their imperfect tools, they worked together stubbornly, collectively, and were able to attain results. Nature was also changed through interaction with man. Forests were destroyed and the area of farmland increased. Nature with its elemental forces was regarded as something hostile to man. The forest, for example, was something wild and frightening and people tried to force it to retreat. This was all done in the name of civilisation, which meant the places where man had made his home, where the earth was cultivated, where the forest had been cut down.
Unit 1 Man and Nature
Work in pairs or groups and discuss the following questions.
1. Do you think man lives in harmony with nature now?
2. Do you think that man has been destroying nature?
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marine a. of, near, living in, or obtained from the sea （近）海的； 海生（产）的 fishery n. a part of the sea used for the business of catching sea fish 近海渔场 exhaust vt. use up completely 用完，用尽
Man in the Realm of Nature
Alexander Spirkin
1 Human beings live in the realm of nature. They are constantly surrounded by it and interact with it. Man is constantly aware of the influence of nature in the form of the air he breathes, the water he drinks, and the food he eats. We are connected with nature by “blood” ties and we cannot live outside nature.
II
3-4
III
5-7
IV
8-9
Nature nurtures mankind unselfishly with its rich resources. Yet, man is so carried away in his transformation of nature that he is unaware that it also has limitations and needs constant care. Now worn by the excessive demands of mankind, nature is unable to maintain the ecological balance needed. Humanity is faced with the problem of how to stop, or at least to moderate, the destruction of Mother Nature.
Could you give some examples?
3. What do you think we should do to preserve nature?
Βιβλιοθήκη Baidu
Watch the following video clip “If the world warms by 6 degrees ” and do the tasks that follow:
4. How much fish is harvested in the North Atlantic every year? A) 12 billion pounds. B) 12 million pounds. C) 20 billion pounds. D) 20 million pounds.
2. What did people in Europe and America in the 19th century think about marine resources? A) They thought that marine resources were almost exhausted. B) They thought that marine resources were seriously destroyed. C) They thought that marine resources were unlimited.
1. Does man tend to become less dependent on nature with the rapid development of society? Why or why not? 2. What does the author think about the present relationship between man and nature? 3. What’s the distinct feature of modern technology according to the passage? 4. What’s the solution to the ecological crisis according to the author? 5. What’s the author’s attitude towards the human transformation of nature?
D) They thought that marine resources were endangered.
3. Why are the threats to fish more alarming than the threats to animals and birds? A) Because fish is a much needed food resource. B) Because plenty of fish is killed every year. C) Because fish is the only diet for many people. D) Because the sea fisheries are going to be exhausted.
Choose the best answer to each of the following questions according to the information contained in the listening passage.
1. What is the main idea of the passage? A) The importance of seafood supplies. B) The fish harvest in the North Atlantic. C) The decline in fish supplies in the sea. D) The importance of protecting sea resources.
D) People’s demand on fish will decline in some parts of the world.
Exercise 1: Answer the following questions with the information contained in Text A.
endanger vt. cause danger to 使遭危害，危及 excessive a. too much; too great; going beyond what is reasonable or right 过多的，过分的，过度的 starvation n. [U] suffering or death from lack of food 挨饿，饥饿；饿 死
Exercise 2: Text A can be divided into four parts with the paragraph number(s) of each part provided as follows. Write down the main idea of each part.
5. What warning do scientists give in the passage? A) Natural resources will be exhausted within the next few years. B) Fish reserves will be destroyed within the next few years because of excessive fishing. C) People in some parts of the world will face starvation because of the drought.