任意两个数都有等差中项吗

简介：Xiao Xiaobai, who took a sip of red wine from the glass as if to conceal it, raised his eyebrows and smiled and said to Sister Li who sat down on the sofa nearby: "The wine is good, but unfortunately I don't have much taste, and I don't know how to taste red wine." Chewing peonies like this is a bit of a waste of the bottle of red wine.