单项选择题
A.12*3%5B.int(3.9)C.len(“Welcome”)D.abs(-8)
A.执行语句color[2]="black"后,字典color的内容为{0:"red",1:"green",2:"black",3:"yellow"}B.执行语句color[4]="black"后,字典color的内容为{0:"red",1:"green",2:"blue",3:"yellow",4:"black"}C.执行语句print(color["green"]),输出结果为1D.执行语句print(color[1]),输出结果为green
A.布尔型B.浮点型C.整型D.字符串