那个是史前时期？
直至公元前一万一千年，它又再次出现。[{'character': '直', 'pinyin': 'zhiii2', 'highest pitch': 8.93, 'lowest pitch': 8.14, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '至', 'pinyin': 'zhiii4', 'highest pitch': 9.94, 'lowest pitch': 8.07, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '公', 'pinyin': 'gong1', 'highest pitch': 10.9, 'lowest pitch': 8.07, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '元', 'pinyin': 'van2', 'highest pitch': 10.12, 'lowest pitch': 8.0, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '前', 'pinyin': 'qian2', 'highest pitch': 8.75, 'lowest pitch': 6.83, 'duration': 0.27, 'prosody hierarchy': '#1'}, {'character': '一', 'pinyin': 'i2', 'highest pitch': 8.42, 'lowest pitch': 6.91, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '万', 'pinyin': 'uan4', 'highest pitch': 10.31, 'lowest pitch': 8.42, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '一', 'pinyin': 'i4', 'highest pitch': 10.42, 'lowest pitch': 8.12, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '千', 'pinyin': 'qian1', 'highest pitch': 8.39, 'lowest pitch': 7.52, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '年', 'pinyin': 'nian2', 'highest pitch': 7.7, 'lowest pitch': 5.7, 'duration': 0.31, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.07}, {'character': '它', 'pinyin': 'ta1', 'highest pitch': 8.29, 'lowest pitch': 7.72, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '又', 'pinyin': 'iou4', 'highest pitch': 8.12, 'lowest pitch': 7.12, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '再', 'pinyin': 'zai4', 'highest pitch': 10.53, 'lowest pitch': 8.64, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '次', 'pinyin': 'cii4', 'highest pitch': 8.64, 'lowest pitch': 6.29, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '出', 'pinyin': 'chu1', 'highest pitch': 7.19, 'lowest pitch': 6.29, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '现', 'pinyin': 'xian4', 'highest pitch': 7.59, 'lowest pitch': 4.55, 'duration': 0.33, 'prosody hierarchy': '#4'}]