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CAI is enabling farmers to obtain pesticide()advice,equipment and finance.Butthis all depends on access to a smartphoneCristopher Saggalla once relied on local fertilizer()and pesticide traders for adviceon how to treat his eight-acre farm in the village of Kulabgoor,southern India Sometimesthey would recommend pesticide that was too expensive or didn't work,prompting people toreturn to the trader and spend more money to try alternatives.od inuwBut in the past eight months,things have changed.Having come across a mobileapplication called Plantix,Saggalla now gets independent guidance tailored for his farm,where he grows rice,cotton,safflowers(used for vegetable oil)and mangoes in the village ofabout 300 families near Hyderabad.Using the free app,he takes photos of plants with pest problems,diseases or nutrientshortages,uploads them and immediately receives clinical information and treatmentrecommendations,as well as advice on applying fertilizer to maximize growth.And his cottonyield()rose from 20 bags per acre last year to 30 bags this growing season.The app has been downloaded by almost 10 million users globally,with about 85 percentof them in India just two and a half years since it was launched there,according to SrikanthRupavatharam,a scientist in digital agriculture at the International Crops Research Institutefor the Semi-Arid Tropics(ICRISAT)in Hyderabad.ICRISAT works on Plantix with its developer,the German agricultural technologycompany PEAT,which also has customers in Brazil,Bangladesh,Pakistan,Vietnam andIndonesia.Farmers upload 20,000 images daily and can exchange information via the Plantixcommunity,too.But as always with technology,there are difficulties to overcome.Apart from languagebarriers,there is the long-lasting problem of lack of connectivity.Pennsylvania State University has sought to fight these problems with an AI talkingassistant that has been built to help farmers in Africa to identify pests and diseases.Plantix canalso be used offline to take pictures,with the information automatically uploaded later when aconnection is made.28.How did Saggalla get advice on how to treat his farm before?A.By using smartphones.B.By searching on the Internet.C.By consulting farm chemical traders.D.By using an app called Plantix.英语试题第6页（共12页）