1. (2021·丹东模拟) 从方框选择单词并用其适当形式填空(有两个多余选项）

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Yuan Longping, the father of hybrid rice ，died in Changsha on May 22, 2021, at the age of 91. Deeply suddened by the of him.

Yuan Longping, who was born in September, 1930, from Agriculture Department in Southwest Agricultural Institute (西南农业学院). He on agriculture education & the research into hybrid rice since he left the institute. Professor Yuan is widely know for the of the genetic basis of heterosis in rice(杂交水稻优势的遗传基础). In the 1960s, when China was suffering serious famine, he up with the idea of hybrid rice, which has a high yield. Ten years later, he in inventing a new species that produced a 20 percent yield than common types of rice. Professor Yuan has shared his knowledge and technology with foreign scientists. In 1979, his technique for hybrid rice into the United States, the first case of intellectual property rights transfer in the history of new China. For his contributions, Yuan "The Father of Hybrid Rice" by the Chinese media. He devoted his life to the research of hybrid rice, helping billions achieve food security. He is an to us all.