题目内容：
设三位数2a3加上326，得另一个三位数5b9，若5b9能被9整除，则a+b等于( )．
A．2 B．4
C．6
D．8
参考答案：
答案解析：
单选题：设三位数2a3加上326，得另一个三位数5b9，若5b9能被9整除，则a+b等于( )．
- 题目分类：小学数学
- 题目类型：单选题
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B．4
C．6
D．8
B．4
C．6
D．8
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