Unit 5 Working the land耕种土地(话题阅读精练） 主题词块积累 1．tackle vt.解决(难题)；应付(局面)；处理 2．shortage n．不足；缺少；短缺 3．boost vt.使增长；使兴旺n.增长；提高；激励 4．attain vt.(通常经过努力)获得；得到 5．intense adj.热切的；十分强烈的；激烈的 6．overcome vt.(overcame，overcome)克服；解决；战胜 7．expand vt.& vi.扩大；增加 vt.扩展；发展(业务) 8．output n．产量；输出；输出量 vt.(output，output) 输出 9．estimate vt.估计；估价；估算 n．估计；估算 10．generate vt.产生；引起 11．leisure n．闲暇；休闲；空闲 12．soil n．泥土；土壤；国土；领土 13．vision n．想象；视力；视野；影像 14．reality n．现实；实际情况；事实 15．wheat n．小麦；小麦籽 16．widespread adj.分布广的；普遍的；广泛的 17．digest vt.& vi.消化 vt.领会；领悟 n．摘要；文摘 18．essential adj.完全必要的；极其重要的 19．mineral n．矿物；矿物质 20．alternative n．可供选择的事物 adj.可供替代的；非传统的 时文拓展阅读 Precision（精确）agriculture is a method of growing crops. Farmers use technology to collect very precise or exact measurements about their land. It tells farmers how they planted seeds, used fertilizers and chemical pesticides, and so on. Farm equipment can plant different amounts of seeds and leave different amounts of fertilizer in different parts of a field. Water measuring equipment can tell farmers how much water their plants are getting. But some of this technology is too costly for small farmers, especially in developing countries.Ranveer Chandra, the Microsoft researcher from India, is working to develop low-cost, high-tech tools for farmers.He developed a system that connects soil sensors to other sensing equipment through unused television (TV) channels.These unused TV signals, known as "white space" frequencies(频率), can provide Internet connection over long distances.Some hospitals and schools in rural areas are already online with white-space connections, Chandra noted. Each soil sensor provides information about conditions on the farm.To connect all the areas into a big picture, a drone aircraft takes photographs from high in the air.Artificial intelligence (AI) compares these photos to the sensor data.AI then can create maps of where the soil is too acidic or needs more water.Similar technology can also help farmers watch their animals.Video cameras connected to computers and linked to the Internet can help farmers recognize sick cattle, for example. However, the level and speed at which new farming skills and technologies will spread remains unclear. Bruce Erickson is a precision farming expert at Purdue University in Indiana.He told the CSA the one problem faced by any new farming technology is getting people to use it with their existing methods.Different countries have different farming methods and different ways of doing business.“It takes people to carry out new farming practices,” Erickson said. 【译文欣赏】 精准农业是一种种植作物的方法。农民利用技术来收集有关其土地的非常精确或确切的测量数据。它能告知农民他们如何播种、使用化肥和化学农药等等。农 ... ...
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