9,13.5,27,67.5,()。
A.202.5
B.189
C.156.5
D.128
:1.5,3.5,7.5,(),13.5A.9.3B.9.5C.11.1D.11.5
9,17,13,15,14,()A.13 B.14 C.13.5 D.14.5
1.5,3.5,7.5,(),13.5 A.9.3B.9.5C.11.1D.11.5
9,17,13,15,14,() A.13 B.14 C.13.5 D.14.5
9,17,13,15,14,()A.13B.14C.13.5D.14.5