http://cache.baidu.com/c?word=%CD%F5%3B%D1%DE%3B%B8%F6%C8%CB%3B%D7%CA%C1%CF%3B1974&url=http%3A//post%2Ebaidu%2Ecom/f%3Fkz%3D528368&b=0&a=31&user=baidu上面说是1974年