你知道这次展览的门票价格吗？
展览将对全体观众实行免费入场，提供义务讲解。[{'character': '展', 'pinyin': 'zhan2', 'highest pitch': 11.45, 'lowest pitch': 8.25, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '览', 'pinyin': 'lan3', 'highest pitch': 11.45, 'lowest pitch': 6.02, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '将', 'pinyin': 'jiang1', 'highest pitch': 8.39, 'lowest pitch': 6.18, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '对', 'pinyin': 'duei4', 'highest pitch': 8.89, 'lowest pitch': 6.95, 'duration': 0.13, 'prosody hierarchy': '#1'}, {'character': '全', 'pinyin': 'qvan2', 'highest pitch': 10.28, 'lowest pitch': 6.69, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '体', 'pinyin': 'ti3', 'highest pitch': 10.28, 'lowest pitch': 6.1, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '观', 'pinyin': 'guan1', 'highest pitch': 7.71, 'lowest pitch': 7.19, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '众', 'pinyin': 'zhong4', 'highest pitch': 8.24, 'lowest pitch': 6.35, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '实', 'pinyin': 'shiii2', 'highest pitch': 7.55, 'lowest pitch': 7.29, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '行', 'pinyin': 'xing2', 'highest pitch': 8.63, 'lowest pitch': 7.02, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'character': '免', 'pinyin': 'mian3', 'highest pitch': 8.63, 'lowest pitch': 3.89, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '费', 'pinyin': 'fei4', 'highest pitch': 10.94, 'lowest pitch': 6.1, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '入', 'pinyin': 'ru4', 'highest pitch': 8.85, 'lowest pitch': 6.61, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '场', 'pinyin': 'chang3', 'highest pitch': 6.7, 'lowest pitch': 6.61, 'duration': 0.32, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.15}, {'character': '提', 'pinyin': 'ti2', 'highest pitch': 7.79, 'lowest pitch': 6.51, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '供', 'pinyin': 'gong1', 'highest pitch': 9.48, 'lowest pitch': 6.51, 'duration': 0.23, 'prosody hierarchy': '#2'}, {'character': '义', 'pinyin': 'i4', 'highest pitch': 10.89, 'lowest pitch': 9.27, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '务', 'pinyin': 'u4', 'highest pitch': 9.27, 'lowest pitch': 6.86, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '讲', 'pinyin': 'jiang2', 'highest pitch': 6.93, 'lowest pitch': 5.2, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '解', 'pinyin': 'jie3', 'highest pitch': 13.68, 'lowest pitch': 0.59, 'duration': 0.3, 'prosody hierarchy': '#4'}]