超市确实有责任承担临期食品损失，但是他们可能为了节约成本篡改了生产日期。
超市不承担临期食品损失，没必要篡改生产日期。[{'character': '超', 'pinyin': 'chao1', 'highest pitch': 11.06, 'lowest pitch': 10.55, 'duration': 0.29, 'prosody hierarchy': 'null'}, {'character': '市', 'pinyin': 'shiii4', 'highest pitch': 14.38, 'lowest pitch': 8.52, 'duration': 0.24, 'prosody hierarchy': '#1'}, {'character': '不', 'pinyin': 'bu4', 'highest pitch': 11.05, 'lowest pitch': 9.16, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '承', 'pinyin': 'cheng2', 'highest pitch': 9.16, 'lowest pitch': 6.29, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '担', 'pinyin': 'dan1', 'highest pitch': 8.45, 'lowest pitch': 7.91, 'duration': 0.19, 'prosody hierarchy': '#2'}, {'character': '临', 'pinyin': 'lin2', 'highest pitch': 8.23, 'lowest pitch': 6.13, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '期', 'pinyin': 'qi1', 'highest pitch': 8.38, 'lowest pitch': 7.04, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '食', 'pinyin': 'shiii2', 'highest pitch': 7.5, 'lowest pitch': 7.2, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '品', 'pinyin': 'pin2', 'highest pitch': 8.37, 'lowest pitch': 7.87, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '损', 'pinyin': 'suen3', 'highest pitch': 8.33, 'lowest pitch': 4.1, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '失', 'pinyin': 'shiii1', 'highest pitch': 8.14, 'lowest pitch': 4.78, 'duration': 0.27, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.25}, {'character': '没', 'pinyin': 'mei2', 'highest pitch': 8.24, 'lowest pitch': 6.91, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '必', 'pinyin': 'bi4', 'highest pitch': 10.95, 'lowest pitch': 8.0, 'duration': 0.12, 'prosody hierarchy': 'null'}, {'character': '要', 'pinyin': 'iao4', 'highest pitch': 10.84, 'lowest pitch': 7.4, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '篡', 'pinyin': 'cuan4', 'highest pitch': 8.74, 'lowest pitch': 6.07, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '改', 'pinyin': 'gai3', 'highest pitch': 6.07, 'lowest pitch': 5.02, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '生', 'pinyin': 'sheng1', 'highest pitch': 7.65, 'lowest pitch': 7.32, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '产', 'pinyin': 'chan3', 'highest pitch': 7.32, 'lowest pitch': 5.45, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '日', 'pinyin': 'riii4', 'highest pitch': 7.13, 'lowest pitch': 5.71, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '期', 'pinyin': 'qi1', 'highest pitch': 8.38, 'lowest pitch': 7.7, 'duration': 0.29, 'prosody hierarchy': '#4'}]