你确定伊朗从未有意研制核武器吗？
伊朗始终否认秘密研制核武器的指控。[{'character': '伊', 'pinyin': 'i1', 'highest pitch': 10.24, 'lowest pitch': 9.35, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '朗', 'pinyin': 'lang2', 'highest pitch': 10.05, 'lowest pitch': 7.91, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '始', 'pinyin': 'shiii3', 'highest pitch': 9.89, 'lowest pitch': 5.77, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '终', 'pinyin': 'zhong1', 'highest pitch': 10.9, 'lowest pitch': 5.77, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '否', 'pinyin': 'fou3', 'highest pitch': 10.85, 'lowest pitch': 5.53, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '认', 'pinyin': 'ren4', 'highest pitch': 7.57, 'lowest pitch': 5.55, 'duration': 0.25, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.12}, {'character': '秘', 'pinyin': 'mi4', 'highest pitch': 10.7, 'lowest pitch': 9.97, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '密', 'pinyin': 'mi4', 'highest pitch': 10.7, 'lowest pitch': 7.87, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '研', 'pinyin': 'ian2', 'highest pitch': 7.87, 'lowest pitch': 6.27, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '制', 'pinyin': 'zhiii4', 'highest pitch': 8.26, 'lowest pitch': 7.55, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '核', 'pinyin': 'he2', 'highest pitch': 8.85, 'lowest pitch': 7.11, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '武', 'pinyin': 'u3', 'highest pitch': 8.85, 'lowest pitch': 6.51, 'duration': 0.12, 'prosody hierarchy': 'null'}, {'character': '器', 'pinyin': 'qi4', 'highest pitch': 8.12, 'lowest pitch': 6.51, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 7.28, 'lowest pitch': 5.97, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '指', 'pinyin': 'zhiii3', 'highest pitch': 6.24, 'lowest pitch': 5.28, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '控', 'pinyin': 'kong4', 'highest pitch': 8.94, 'lowest pitch': 6.94, 'duration': 0.29, 'prosody hierarchy': '#4'}]