Born in 1930, Yuan Longping

Born in 1930, Yuan Longping graduated from Southwest Agricultural College in 1953.
语法填空答案：
Born in 1930, Yuan Longping graduated from Southwest Agricultural College in 1953. Since then, ____46____ (find) ways to grow more rice has been his life ____47___. As a young man, he saw the great need ___48___ increasing the rice output. At that time, hunger was a ___49___ problem in many parts of the countryside. Yuan Longping searched for a way to increase rice harvests without ____50___ the area of the fields. Yuan Longping grows ___51____ is called super hybrid rice. In 1973, he became the first agricultural pioneer in the world ____52_____ (grow ) rice that has a high output. This special strain of rice makes ___53___ possible to produce 20% more of the crop in the same fields. He is now ___54__ his knowledge in many less developed countries to increase their rice harvests. Thanks to his research, the UN has more tools in the battle to rid the world ___55___ hunger.

答案：

1.finding 2. goal 3. for 4. disturbing 5. expanding
6.what 7. to grow 8. it 9. circulating 10.of