13,9,11,6,9,3,(),()。
A.6,0
B.-1,1
C.7,0
D.7,6
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13,9,11,6,9,3,(),()A.6,0B.-1,1C.7,0D.7,6
13,9,11,6,9,3,(),() A.6,0B.-1,1C.7,0D.7,6
13, 9, 11, 6, 9, 3, (), () A.6, 0 B.-1, 1 C.7, 0 D.7, 6
2,3,5,(),11,13。 A.6 B.7 C.9 D.10
3,4,6,9,(),18 A.11 B.13 C.15 D.17
3,4,6,9,(),18。 A.11 B.12 C.13 D.15