Three years <a href="http://weixian.mzfz.gov.cn/news/comment.asp?page=10&ArticleID=965">approved pharmacy</a>  WASHINGTON, Oct 13 (Reuters) - Senate negotiations to bringa boiling fiscal crisis to an end showed signs of progress onSunday, but there were no guarantees that the U.S. federalgovernment shutdown was about to end or that a historic defaultwould be avoided.