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       in 1930, Yuan Longping graduated from Southeast Agricultural College in 1953. Since then, finding ways to grow more rice     (be) his life goal. As a young man, he saw the great        for increasing the rice output. At that time, hunger was a     (disturb) problem in many parts of the countryside. Yuan Longping grows        is called super hybrid rice, making       possible to increasing rice harvest without        (expand) the area of the field. Yuan Longping has been considered the first agricultural pioneer in the world       (grow) rice that has a high output.     to his research, the UN has more tools in the battle to rid the world     hunger.