课时作业(二十四) 第五讲 “藏而不露”的推理判断题
test 1
(2013•湖北省荆州市高中毕业班质量检测ⅰ)
precision agriculture (精确农业) is a way of thinking about how to improve production and get more from existing resources.it often involves the use of technology.an example found mostly in wealthier countries is a computer-guided tractor.the computer does most of the driving.it uses signals from satellites in the global positioning system.gps technology helps the tractor cut rows in straight lines and put the right amount of fertilizer in the right place.
jimmy messick is a farm
