4,5,7,3,-14,()。
A.-51
B.-47
C.-35
D.-27
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4/17,7/13, 10/9, () A.13/6;B.13/5;C.14/5;D.7/3;
4/17,7/13,10/9,()。 A.13/6 B.13/5 C.14/5 D.7/3
4, 5, 7, 3, -14, ()。A.-51 B.-47 C.-35 D.-27
14, 7, 5, 5, 2,4, 1, ()。A.-4 B.-3 C.3 D.4
-3,5,7,4,14,18,()A.29B.23C.21 D.17
14,7,5,5,2,4,1,()。A.-4 B.-3 C.3 D.4