单项选择题
A.30 B.32 C.34 D.36
2,-1,-1/2,-1/4,1/8,()A.-1/10B.-1/12C.1/16D.-1/14
单项选择题2,-1,-1/2,-1/4,1/8,()
A.-1/10 B.-1/12 C.1/16 D.-1/14
1,6,13,()A.22B.21C.20D.19
单项选择题1,6,13,()
A.22 B.21 C.20 D.19
65,35,17,3,()A.1B.2C.0D.4
单项选择题65,35,17,3,()
A.1 B.2 C.0 D.4