任意两个数都有等差中项吗

简介：Oh, here you go? After hearing this, Mr. Qin, who had just come to his senses, couldn't help but raise his head and narrow his eyes to look at Xiao Xiaobai. Then he smiled and waved to Xiao Xiaobai and said: "Come on, young man, come and sit down!" You're welcome! Xiao Qingbai, come and sit too.