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阅读下面文段,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空,并将答案填写在答题卡的相应位置上。

Born1.a poor farmer’s family in 1930, Dr Yuan graduated from Southwest2.(agriculture) College in 1953.3.then, finding ways to grow more rice has been his life goal.4.a young man, he saw the great need for increasing the rice output. At that time hunger was a5.(disturb) problem in many parts of the countryside. Dr Yuan searched for a way to increase rice harvests6.expanding the area of the fields. In 1950, Chinese farmers could produce only fifty million tons of rice. In a recent harvest, however, nearly two hundred million tons of rice7. (produce). These increased harvests mean that 22% of the world’s people are fed from just 7% of the farmland in China. Dr Yuan is now circulating his knowledge in India, Vietnam and many other 8.(develop) countries to increase their rice harvests. Thanks to his research, the UN has more tools in the battle to rid the world9.hunger. Using his hybrid rice, farmers are producing harvests 10.(two) as large as before.

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少年,再来一题如何?
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