"哪些海生物能够产生人工珍珠？"
现在的人工珍珠也正是利用蛤、蚌的这一习性来进行培育的。[{'character': '现', 'pinyin': 'xian4', 'highest pitch': 10.61, 'lowest pitch': 9.22, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 10.18, 'lowest pitch': 7.55, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.11, 'lowest pitch': 7.46, 'duration': 0.11, 'prosody hierarchy': '#1'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 7.65, 'lowest pitch': 6.94, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '工', 'pinyin': 'gong1', 'highest pitch': 8.82, 'lowest pitch': 7.19, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '珍', 'pinyin': 'zhen1', 'highest pitch': 9.19, 'lowest pitch': 8.23, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '珠', 'pinyin': 'zhu1', 'highest pitch': 9.39, 'lowest pitch': 3.67, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '也', 'pinyin': 'ie3', 'highest pitch': 7.21, 'lowest pitch': 3.67, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '正', 'pinyin': 'zheng4', 'highest pitch': 7.42, 'lowest pitch': 6.64, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 7.21, 'lowest pitch': 6.6, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '利', 'pinyin': 'li4', 'highest pitch': 7.33, 'lowest pitch': 6.45, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '用', 'pinyin': 'iong4', 'highest pitch': 6.74, 'lowest pitch': 5.13, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '蛤', 'pinyin': 'ge2', 'highest pitch': 7.53, 'lowest pitch': 5.58, 'duration': 0.36, 'prosody hierarchy': '#2'}, {'character': '蚌', 'pinyin': 'bang4', 'highest pitch': 10.69, 'lowest pitch': 7.0, 'duration': 0.29, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.11, 'lowest pitch': 6.08, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '这', 'pinyin': 'zhe4', 'highest pitch': 8.17, 'lowest pitch': 7.84, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '一', 'pinyin': 'i4', 'highest pitch': 7.84, 'lowest pitch': 6.53, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '习', 'pinyin': 'xi2', 'highest pitch': 6.53, 'lowest pitch': 6.1, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '性', 'pinyin': 'xing4', 'highest pitch': 8.65, 'lowest pitch': 6.51, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.12}, {'character': '来', 'pinyin': 'lai2', 'highest pitch': 6.63, 'lowest pitch': 5.79, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '进', 'pinyin': 'jin4', 'highest pitch': 7.78, 'lowest pitch': 5.79, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '行', 'pinyin': 'xing2', 'highest pitch': 7.5, 'lowest pitch': 6.5, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '培', 'pinyin': 'pei2', 'highest pitch': 7.5, 'lowest pitch': 5.7, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '育', 'pinyin': 'v4', 'highest pitch': 8.36, 'lowest pitch': 6.15, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.11, 'lowest pitch': 4.83, 'duration': 0.23, 'prosody hierarchy': '#4'}]