龙舟竞渡在什么时期就有了

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龙舟竞渡在什么时期就有了 5893144503729051319982512376707289356493231722415554658224433038811381845520748582587566683971293 (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })();