http://cache.baidu.com/c?word=%D7%DC%CC%E5%3B%D0%D2%B8%A3%3B%B8%D0%3B%C1%BF%B1%ED%3B%B5%C4%3B6%3B%B8%F6%3B%D2%F2%D7%D3&url=http%3A//www%2Eblog%2Eedu%2Ecn/user2/30780/archives/2005/229370%2Eshtml&b=0&a=24&user=baidu