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C.An Attractive QuestionD.Words Outperform NumbersCNearly every week,we hear news about the latest successes and failures in driverless vehicles.But we hear little about how other industries are developing this same kind of technology.Oneindustry heavily involved in researching and developing artificial intelligence,or Al,is agriculture.Companies are experimenting with high-tech tools that can help farmers save time and money,whilereducing environment-harming chemicals.One of the companies is EcoRobotix of Switzerland.It created a robot equipped with AI andcameras to identify all plants on a farm.The robot has four wheels to carry itself through the fields insearch of weeds.Computer-controlled arms then lower and spray weeds with small amounts ofherbicide ()Company officials say the robot can fully operate on its own for up to 12hours a day while being powered by the sun.It uses the same kind of sensor and positioningtechnology used to guide driverless vehicles.A farmer can also control the equipment through a smartphone.The co-founder of EcoRobotix,Aurelien Demaurex,says the farm robot can kill weeds with 20times less herbicide than traditional methods.This is because the system uses exactly the right amountof chemical in the exact place required to kill weeds.Currently,farmers spread weed killers overmassive areas to destroy unwanted plants.Another company developing farm robotics is California-based Blue River Technology.Thecompany has a system called "See Spray",which it claims is the world's first smart sprayer.Thesystem-which connects to the back of a tractor-is also equipped with AI to identify and chemicallykill only weeds.It can also spray chemicals on wanted plants to help them grow.Ben Chostner,vicepresident of business development for Blue River Technology,explains in a company video that SeeSpray technology uses the same deep learning methods used in facial recognition."The first time themachine saw pigweed,it didn't know what kind of plant it was.But we taught it-by giving it tens ofthousands of examples of pigweed-and now it's an expert in pigweed.28.How will AI benefit agriculture?A.It will fund agriculture research.B.It can avoid harmful chemicals.C.It contributes to low-cost farming.D.It frees all farmers from field work.29.What do the products of the two companies have in common?