//搜索相关的词语
        public Assortment serchofword(Assortmentdatanode mm, string m2)
        {
            Assortment mword = mm.getuser_work();

            if (mword.getWord() == m2)
            {
                return(mword);
            }
            else
            {
                return(serchofword(mm.getnextserchdatanode(), m2));
            }
        }//