18, 4, 12, 9, 9, 20, (), 43。
A.8
B.11
C.30
D.9
18,4,12,9,9,20,(),43 A.8;B.11;C.30;D.9
6 4 8 9 12 9 () 26 30A.12 B.16 C.18 D.22
5 8 -4 9 () 30 18 21A.14 B.17 C.20 D.26
18,4,12,9,9,20,(),43A.8B.11C.30 D.9
18, 4, 12, 9, 9, 20, (), 43。A.8 B.11C.30 D.9
4,8,9,12,9, (),26,30 A.12 B.16 C.18 D.22