http://www.hudong.com/wiki/%E6%95%B0%E5%AD%97%E6%8E%A8%E7%90%86
http://edu.people.com.cn/GB/8216/63960/68180/4608014.html
想不到公务员也要考数学推理，
http://www.china.com.cn/info/zhuanti/gwykszx/2010-04/16/content_19829606.htm