我本来想给你写的,没想到太多了,我给你找了几个网站,上面有好多,相信能满足你的要求.
http://www.***.cn/klkw/jxwz/200602/2662.html
http://bj3.netsh.com/bbs/105653/messages/466.html
http://www.***.cn/Article/jiaoxue/YUYAN/200609/497.html
http://www.***.com/dede3/html/hfs/2006/1026/12495.html
祝:学业有成!