string []strArr = new string[]{"ad","d","cdber"};

  List<iwms_news> li = new List<iwms_news>();
  string[] strArr = new string[] { "中心","铁"};
  foreach(string strTemp in strArr)
  {  
       var query = (from news in db.iwms_news
                    where SqlMethods.Like(news.title, string.Format("%{0}%",strTemp.ToString()))
                    select news).Skip(0).Take(20).ToList<iwms_news>();
       li.AddRange(query.ToList<iwms_news>());
 }

            foreach (iwms_news q in li)
                Console.WriteLine(q.title);
            Console.ReadLine();