Thepriceofricechange的精選

問題詳情：Thepriceofricechangesduringtheyear.Itisusefulforricefarmerstoknowhowthepricechanges,thentheycanselltheirricewhenthepriceishigh.Lastyear,thepriceofricewasverylowinNovember. Thiswasabadtimeforf...