闻杂交水稻之父袁隆平院士在回母校原武汉四中时曾自曝其读中学时数学成绩不太好,“到现在为止,我仍然搞不懂为什么‘负负得正’(负数乘以负数得正数).”袁院士说,上中学时他就此去问老师,老师告诉他不要问为什么,呆记就行.后来学到别的知识,袁隆平再问老师,老师又说:你记着就 Academician Yuan Longping, the father of Hybrid Rice, once admitted that his math score was not very good when he returned to his fourth year in Wuhan, where he came to his original school in Wuhan. “Until now, I still can not understand why I’m getting negative (multiplying negative numbers by negative numbers A positive number). ”Yuan Yuanshi said he was in high school to ask the teacher, the teacher told him not to ask why, stay on the line and later learned other knowledge, Yuan Longping asked the teacher again, the teacher said: You remember on