一个三位数的百位数字是a,十位数字是b,个位数字是c,这个三位数是[ ]
A. abc
B.100a +10b +c
C.3a +2b +c
D.cba
答案:B
一个三位数的百位数字是a,十位数字是b,个位数字是c,这个三位数是[ ]
A. abc
B.100a +10b +c
C.3a +2b +c
D.cba
答案:B
完形填空。 | ||||
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C
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