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【简答题】
给定有关生日信息的字典{'小明' : '4月1日', '小红' : '1月2日', '老王': '4月1日', '小强' : '9月10日' },查询出小明的生日并修改为“5月1日”,同时将老王的生日信息删除,增加小王的生日信息为“10月1日”
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