Thepriceofricechange的精选

问题详情：Thepriceofricechangesduringtheyear.Itisusefulforricefarmerstoknowhowthepricechanges,thentheycanselltheirricewhenthepriceishigh.Lastyear,thepriceofricewasverylowinNovember. Thiswasabadtimeforf...