精选优质文档-倾情为你奉上定语从句在阅读中的运用When many people are worried that there are no more heroes in the modern era,two university students who lost their lives to rescue drowning children have shown that heroes still exist(存在)According to the Inner Mongolia Morning Post,the tragedy(悲剧) occurred on the afternoon of December 14,2002 when three school students skating on a frozen lake in Qingcheng Park in Hohhot fell through the ice into the freezing water More than 20 university students who happ