必修四Unit2.pptx

Warming up & Reading,Working the land,Enjoy a Poem By Li Shen,Farmers weeding at noon, Sweat down the field soon. Who knows food on a tray, Due to their toiling day.,Do you know these grains (谷物)?,wheat,rice,sorghum,高粱,corn,cotton,broomcorn,peanut,soybean,plough(犁田),Have you ever grown any plants? Do you know how to grow rice?,seed/sow seeds (播种),irrigate (灌溉),fertilize(施肥),remove the weeds,transplant insert the young plants into the field,harvesting,winnowing (扬谷),Agriculture in the past,agriculture tools,Agriculture in the modern times,agricultural machine and equipment High-tech greenhouse,Orange:Wheat(bread) Blue:Rice Green:Food made of flour White:potato,cotton,It is said that there are 2.4 billion people who eat rice every day throughout the world.,What is the main food in all East Asian and Southeast Asian countries?,More than 800 million people go to bed hungry every day !,If that happened, people might die of hunger. The whole world would get into trouble.,What do you think would happen if tomorrow there was suddenly no rice to eat?,If you had the chance to do something to help end hunger in the world, what would you do?,How to solve hunger?,making good use of the waste land,developing the technology to,inventing a new kind of food,improving the quality of the soil,preventing the pests from eating our crops,In the late 1990s, Brown, an American scholar, came up with the theory of Chinese Menace(威胁), which said that in the 2030s, Chinese population will add up to 1.6 billion, and had the question who would feed the large population in China as well as in the world.,The most effective way to solve the food shortage problem is to increase the yield of the grain crop per land area through the advancement of science and technology.,Just at that time, a Chinese scientist declared to the world that China can solve the problem by himself and help to solve the same problem in the world.,Yuan Longping “Father of Hybrid Rice”,袁隆平, 男, 1930年9月出生于北京, 1953年毕业 于西南农学院农学系。毕业后, 一直从事农业教育 及杂交水稻研究。 在中国人民正闹饥荒的20世纪60年代, 袁隆平 提出了杂交水稻的概念, 这种新型水稻具有高产量 的特点。10年后, 他研制成功了一种产量比一般 水稻高出30%的新型水稻。 袁隆平一生献身于农业研究, 先后受到联合国 教科文组织、粮农组织的称誉。袁隆平虽已年届 70岁, 仍然一如既往地从事农业研究。,袁隆平人物简历,A PIONEER FOR ALL PEOPLE,Reading,Scanning: Find out the main idea of each paragraph.,Dr Yuans biography Dr Yuans appearance and his achievement. Dr Yuans dreams. Dr Yuans personality.,Para 1 Para 2 Para 3 Para 4,1. What dose Dr. Yuan look like? Why? 2. What is his achievement?,Para 1,He looks like a farmer (his sunburnt face and arms and his slim, strong body) because he always works under the sun for a long time.,He produces super hybrid rice, which makes it possible to produce one-third more of the crop in the same fields.,Careful reading,He is more a farmer than a scientist.,Born,Southwest Agricultural College,Saw the great need for increasing the rice output,200 million tons of rice was produced,Circulating his knowledge in less developed countries to increase the rice harvests,Searched for a way to increase rice harvests without expanding the area of the fields,Para. 2 Dr Yuans biography,Which of the following description about Dr Yuans personality is not true? He cares little about money and being famous. B. Besides hard work, he has some hobbies, such as listening to violin music, playing mah-jong, swimming and reading. C. Leading a comfortable life means a lot to him. D. He gives much money to help others to do research in agriculture.,Para. 3 Dr Yuans personality,Find out the sentences describing his personalities.,What is his attitude towards fame and wealth?,He is not satisfied with his present achievement and never stops struggling or dreaming.,Being famous gives him less freedom; care little about,Achievements:,Hobbies:,grow rice that has a high output,circulate his knowledge abroad,give money to equip others for their research,listening to violin music,playing mah-jong,swimming,reading,Describe the rice in Dr. Yuan Longpings first dream,As tall as sorghum As big as a broom As huge as a peanut,To export his rice so that it can be grown all over the world.,The second dream,Para 4,What does “Wishing for