____ 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 increase 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.