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(2007•玉溪)观察表一,寻找规律,表二、表三、表四分别是从表一中截取的一部分...
(2007•玉溪)观察表一,寻找规律,表二、表三、表四分别是从表一中截取的一部分,其中a,b,c的值分别为( )
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A.20,29,30
B.18,30,26
C.18,20,26
D.18,30,28
考点分析:
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