Isadvertisementreallynecessary?Billionsofdollarsarespen...
問題詳情：Isadvertisementreallynecessary?Billionsofdollarsarespentoniteveryyear,soitmustbeimportant.Afterall,it’sabusyworld.Youhavetoadvertisetogetpeople’sattentiontosellproducts!Noteverycompanythinks...