One of China’s early agricultural scientist was Jia Sixie, who lived 76.____________
in the sixth century AD. He is born in Yidu, Shandong Province. 77.____________
He spent his time do research into agriculture. He collected information, 78.____________
studied them, did experiments and learnt about the experience of farmers. 79.____________
Around 540AD, he wrote a book calling Qimin Yaoshu. The book 80.____________
