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单项选择题

设字典 dict_1={2:’two’,3:’three’,1:’one’},进行操作 dict_1[1]=’One’后,字典 dict_1 的值可能会变成( )。 A. {2:’two’,3:’One’,1:’one’} B. {1: ‘One’, 2: ‘two’, 3: ‘three’} C. {2:’two’,3:’three’,1:’one’,1:’One’} D. {2:’One’,3:’three’,1:’one’}

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