你怎么判断枣子是否正常？
从外观上看，正常的枣子表皮细腻、光滑，稍微捏一下，有弹性。[{'character': '从', 'pinyin': 'cong2', 'highest pitch': 8.99, 'lowest pitch': 7.38, 'duration': 0.34, 'prosody hierarchy': '#1'}, {'character': '外', 'pinyin': 'uai4', 'highest pitch': 10.04, 'lowest pitch': 8.44, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '观', 'pinyin': 'guan1', 'highest pitch': 10.79, 'lowest pitch': 8.44, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '上', 'pinyin': 'shang4', 'highest pitch': 11.15, 'lowest pitch': 7.57, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '看', 'pinyin': 'kan4', 'highest pitch': 8.17, 'lowest pitch': 5.3, 'duration': 0.26, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.29}, {'character': '正', 'pinyin': 'zheng4', 'highest pitch': 11.63, 'lowest pitch': 9.61, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '常', 'pinyin': 'chang2', 'highest pitch': 9.61, 'lowest pitch': 6.89, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 9.44, 'lowest pitch': 7.74, 'duration': 0.09, 'prosody hierarchy': '#1'}, {'character': '枣', 'pinyin': 'zao3', 'highest pitch': 8.88, 'lowest pitch': 4.74, 'duration': 0.28, 'prosody hierarchy': 'null'}, {'character': '子', 'pinyin': 'zii5', 'highest pitch': 7.14, 'lowest pitch': 5.4, 'duration': 0.19, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.15}, {'character': '表', 'pinyin': 'biao3', 'highest pitch': 8.75, 'lowest pitch': 5.57, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '皮', 'pinyin': 'pi2', 'highest pitch': 7.46, 'lowest pitch': 7.25, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '细', 'pinyin': 'xi4', 'highest pitch': 9.71, 'lowest pitch': 7.46, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '腻', 'pinyin': 'ni4', 'highest pitch': 8.1, 'lowest pitch': 5.68, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'character': '光', 'pinyin': 'guang1', 'highest pitch': 10.56, 'lowest pitch': 9.21, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '滑', 'pinyin': 'hua2', 'highest pitch': 10.18, 'lowest pitch': 5.98, 'duration': 0.35, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.29}, {'character': '稍', 'pinyin': 'shao1', 'highest pitch': 9.29, 'lowest pitch': 8.44, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '微', 'pinyin': 'uei1', 'highest pitch': 9.06, 'lowest pitch': 8.25, 'duration': 0.13, 'prosody hierarchy': '#1'}, {'character': '捏', 'pinyin': 'nie1', 'highest pitch': 11.22, 'lowest pitch': 8.97, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '一', 'pinyin': 'i2', 'highest pitch': 11.15, 'lowest pitch': 7.55, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '下', 'pinyin': 'xia4', 'highest pitch': 8.37, 'lowest pitch': 6.92, 'duration': 0.33, 'prosody hierarchy': '#3'}, {'character': '有', 'pinyin': 'iou3', 'highest pitch': 6.99, 'lowest pitch': 5.54, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '弹', 'pinyin': 'tan2', 'highest pitch': 7.01, 'lowest pitch': 5.72, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '性', 'pinyin': 'xing4', 'highest pitch': 10.4, 'lowest pitch': 6.81, 'duration': 0.31, 'prosody hierarchy': '#4'}]