521,512,318,381,702,()。
A.207
B.270
C.720
D.271
:269,286,302,307,()。A.310B.317C.318D.316
:521,512,318,381,702,()。A.207 B.270 C.720 D.271
0,1,5,23,119,()A.719 B.721 C.599 D.521
0,1,5,23,119,______ () A.719 B.721 C.599 D.521
521,512,318,381,702,()。 A.207 B.270 C.720 D.271
0,1,5,23,119,() A.719 B.721 C.599 D.521