题目
根据句意及所给汉语提示或首字母补全本单元有关伟人生平的核心词汇。
1. Yuan Longping d______ (发展) hybrid rice to help solve the food problem.
2. Marie Curie was the first woman to win a N______ (诺贝尔) Prize.
3. Qian Xuesen made great c______ (贡献) to China's space industry.