() 28 36 10 18 18 1 9 9 9
A.18
B.28
C.54
D.64
请帮忙给出正确答案和分析,谢谢!
63,26,7,0,-1,-2,-9,() A、-18;B、-20;C、-26;D、-28;
134,68,36,21,() A.18 B.14.5C.12 D.9
3,1/2,9, 1/8,(), 1512 A.18B.29C.81D.36
-7,0,1,2,9,()A.16B.28C.36 D.18
26,7,0,-1,-2,-9,()A.-18 B.-20 C.-26 D.-28