12 ,6, 18, 12, 30,(),34。 A.4 B.8 C.

恬恬2019-12-17  7

问题 12 ,6, 18, 12, 30,(),34。A.4 B.8 C.10 D.12

选项

答案A

解析12 + 6 = 18,18 + 12 = 30,30 + 4 = 34,故空缺项为4,选 A。@##
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