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附近旅行社电话号码 2021年6月英语六级考试真题试卷（第3套）
Part I Writing (30 minutes)
Directions: For this part, you are allowed 30 minutes to write an essay commenting on the remark "A smile is the shortest distance between two people." You can cite examples to . You should write at least 150 words but no more than 200 words.
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Part II Reading Comprehension (Skimming and Scanning) (15 minutes)
Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, choose the best answer from the four choices marked A) , B) , C) and D) . For questions 8-10, complete the sentences with the information given in the passage.
广州珠海
旅游攻略
Norman Borlaug: 'Father of the Green Revolution' Few people have quietly changed the world for the better more than this rural lad from the midwestern state of Iowa in the United States. The man in focus is Norman Borlaug, the Father of the 'Green Revolution', who died on September 12, 2021 at age 95. Norman Borlaug spent most of his 60 working years in the farmlands of Mexico, South Asia and later in Africa, fighting world hunger, and saving by some estimates up to a billion lives in the process. An achievement, fit for a Nobel Peace Prize.
Early Years
南澳岛天气
"I'm a product of the great depression" is how Borlaug described himself. A great-grands
on of Norwegian immigrants to the United States, Borlaug was born in 1914 and grew up on a small farm in the northeastern corner of Iowa in a town called Cresco. His family had a 40-hectare (公顷) farm on which they grew wheat, maize (玉米) and hay and raised pigs and cattle. Norman spent most of his time from age 7-17 on the farm, even as he attended a one-room, one-teacher school at New Oregon in Howard County.
Borlaug didn't have money to go to college. But through a Great Depression era programme, known as the National Youth Administration, Borlaug was able to enroll in the University of Minnesota at Minneapolis to study forestry. He excelled in studies and received his Ph.D. in plant pathology (病理学) and genetics in 1942. From 1942 to 1944, Borlaug was employed as a microbiologist at DuPont in Wilmington. However, following the December 7, 1941 attack on Pearl Harbor, Borlaug tried to join the military, but was rejected under wartime
全球顶级豪华游轮 In Mexico
衡阳旅游十大景点
In 1944, many experts warned of mass starvation in developing nations where populatio
ns were expanding faster than crop production. Borlaug began work at a Rockefeller Foundation-funded project in Mexico to increase wheat production by developing higher-yielding varieties of the crop. It involved research in genetics, plant breeding, plant pathology, entomology (昆虫学) , agronomy (农艺学) , soil science, and cereal technology. The goal of the project was to boost wheat production in Mexico, which at the time was importing a large portion of its grain.
Borlaug said that his first couple of years in Mexico were difficult. He lacked trained scientists and equipment. Native farmers were hostile towards the wheat programme because of serious crop losses from 1939 to 1941 due to stem rust.
Wheat varieties that Borlaug worked with had tall, thin stalks. While taller wheat competed better for sunlight, they had a tendency to collapse under the weight of extra grain - a trait called lodging. To overcome this, Borlaug worked on breeding wheat with shorter and stronger stalks, which could hold on larger seed heads. Borlaug's new semi-dwarf, disease-resistant varieties, called Pitic 62 and Penjamo 62, changed the potential
yield of Mexican wheat dramatically. By 1963 wheat production in Mexico stood six times more than that of 1944.
Green Revolution in India
During the 1960s, South Asia experienced severe drought condition and India had been importing wheat on a large scale from the United States. Borlaug came to India in 1963 along with Dr. Robert Anderson to duplicate his Mexican success in the sub-continent. The experiments began with planting a few of the high-yielding variety strains in the fields of the Indian Agricultural Research Institute at Pusa in New Delhi, under the supervision of Dr. M. S. Swaminathan. These strains were subsequently planted in test plots at Ludhiana, Pantnagar, Kanpur, Pune and Indore. The results were promising, but large-scale success, however, was not instant. Cultural opposition to new agricultural techniques initially prevented Borlaug from going ahead with planting of new wheat strains in India. By 1965, when the drought situation turned alarming, the Government took the lead and allowed wheat revolution to move forward. By employing agricultural te
chniques he developed in Mexico, Borlaug was able to nearly double South Asian wheat harvests between 1965 and 1970.
