1,5,9,14,21,()
A.30
B.32
C.34
D.36
1,5,9,14,21,() A. 30;B. 32;C. 34;D. 36;
1,5,9,14,21,() A、30;B. 32;C. 34;D. 36;
0,1/3, 5/8,5/6,9/10,()A.5/6 B.8/9 C.13/14 D.21/20
0,1/3,5/8,5/6,9/10,()A.5/6 B.8/9 C.13/14 D.21/20
0,1/3,5/8,5/6,9/10,() A.5/6 B.8/9 C.13/14 D.21/20
7,9, 1,15,-5,21,()。 A.36B.-11C.13D.27