40, 3, 35, 6, 30, 9, ( ), 12, 20, ( )
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40, 3, 35, 6, 30, 9, ( ), 12, 20, ( )
A. 15,225 B. 18,25 C. 25,15 D. 25,18
参考答案:
40, 3, 35, 6, 30, 9, ( ), 12, 20, ( )
A. 15,225 B. 18,25 C. 25,15 D. 25,18
参考答案: