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1、Unit 19 Modern agricultureListening & speaking【学习目标】围绕课文主题进行有关农业种植及渔业养殖方面内容进行听说读写训练。学习和掌握本单元的语法重点：“Itthatwho”强调句的用法。 【达标练习】第一部分：听下面几段对话，从题中所给的A、B、C三个选项中选出最佳选项。请听第1段材料，回答第1至2题。1.What is the weather like for the next two days? A. Wet and windy.B. Rainy and cold. C. Dry and sunny.2.What is the man goin
2、g to do? A. To sow carrot seed.B. To pick cabbages. C. To sell tomatoes.请听第2段材料，回答第3至5题。3.Where does each family in the USA live? A. In small towns. B. On its own fields. C. In villages.4.Where do American farmers do throughout the week? A. Stay on their land.B. Go to church C. Travel to the nearest
3、 towns.5.When do American farmers go shopping? A. On Fridays. B. On Saturdays C. On Sundays.请听第3段材料，回答第6至8题。6.How many farmers are there in China? A. Over eight million. B. Over eighty million. C. Over eight hundred million.7.What were the people in many other countries doing while the farmers in Ch
4、ina were studying the science of agriculture? A. Hunting for food. B. Gathering their crops. C. Studying the science of agriculture too.8.What is the book about? A. The author himself. B. The knowledge of agriculture. C. The knowledge of many different things.第二部分：口语练习Work in pairs. Ask the question
5、s and then give the main idea according to the answers.1.The reason why Sunlight is a gardens most basic need.2.The position of a home garden.3.The advice on how to improve a home garden if the soil of the garden is not too good.4.The time when fertilizer should be added to the soil.For many people,
6、 growing crops on a small piece of land is not a business. But a home garden may be an important part of a familys food supply. Or it is simply an enjoyable activity. Sunlight is a gardens most basic need. A good place for a garden must have at least six hours of sunlight a day. Eight to ten hours i
7、s best. If the garden does not receive at least six hours of light during the growing season, it will not produce a good crop. The garden should not be near the base of a hill or near a wall. They also block fresh air that helps raise the temperature of the soil early in the growing season. Even if
8、the soil of your garden is not too good, it can be improved. Composted(混合)food waste and other organic material can make poor soil dark and rich. In the northern half of the world, planting season starts in March. In the southern half, it begins in November. Planting season is also a good time to ad
9、d fertilizer to the soil. This will help the growth of seeds or young plants. Experts say fertilizer should be turned into the soil to a depth of eight to ten centimeters. This permits rooting seeds or plants to use the nutrients(养分) immediately.Reading【达标练习】American FarmersTwo new reports offer inf
10、ormation about American farmers. The first report provides official information on farms and farmland in the United States. The other gives the opinions of young American farmers. The first report says that the number of American farms has decreased. It was the second biggest decrease in the number
11、of American farms since 1991. Over 380,000,000 hectares(公顷)of land were used for farming last year. That is down about 800,000 hectares from one year earlier. The other report comes from the nations largest farm group. It questioned about 300 farmers between the ages of 18 and 35 from across the cou
12、ntry. 51% of them said they started farming as a member of a family business. 27% entered farming on their own. Almost 14% said marriage led them to farming. Almost 72% of the farmers said they or their husband or wife have another job. 59% of the young American farmers said they are more hopeful ab
13、out farming now than they were five years ago. More than 9% said they believe they will remain in farming all their lives. And, almost 85% would like to see their children become farmers.Judge the following true or false：1.The two reports are from the government. ( )2.The number of American farms is
14、 less than ever before. ( )3.Most of the young farmers become farmers because of their parents.( )4.Less than 30 among them will devote themselves to farming.( )Earth DayEarth Day is a yearly call for people to work together to save the planet. The first Earth Day took place in the United States on
15、April 22nd, 1970. Former Senator(前参议员)Gaylord Nelson started Earth Day because he believed few public officials were concerned about the environment. He organized a nation- wide effort to educate people about environmental problems. Experts say the environment in the United States is better than it
16、was thirty-three years ago. There are stronger laws and better technologies. However, experts say major threats(威胁)around the world remain. For example, air and water pollution are still serious problems in many countries. The human population is putting more pressure on land and water supplies. The destruction of f
