(),4,18,48,100
A.-16
B.-8
C.-4
D.0
(),4,18,48,100A.-16 B.-8 C.-4 D.0
:0,4,18,48,100,() A.140B.160C.180D.200
32 、 1/2, 2/4, 4/8,7/16,11/32,()A 16/64 B 1/4 C13/48 D 1/3
4,3,2,0,-3,-8,() A.-15 B.-16 C.-17 D.-18
0,4,18,48,100,() A.140B.160C.180D.200