9,17,13,15,14, ()。
A. 13
B. 14
C. 13.5
D. 14.5
9,17,13,15,14,()A.13 B.14 C.13.5 D.14.5
1,3,0,6,10,9,()A.13 B.14 C.15 D.17
9,17,13,15,14,______ () A.13 B.14 C.13.5 D.14.5
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
9,17,13,15,14, ()。A. 13B. 14C. 13.5D. 14.5