Ⅰ. 用本模块恰当的单词补全语境
1. study biology 学习生物学
2. the staple food 主食
3. study modern agriculture 研究现代农业
4. selective breeding for better yield 选择性育种以获得更好的产量
5. cross different species of rice 杂交不同品种的水稻
6. make a significant breakthrough 做出重大突破
7. publish the results of his experiment 发表他的实验结果
8. in terms of both quantity and quality就数量和质量而言
9. the hybrid rice of high quality 高质量的杂交水稻
10. the world’s leading oil producer 世界上主要的石油生产者
11. a leading figure in agriculture 农业领军人物
12. convert the original plants 转化原植物
13. support his research 支持他的研究
