單項(xiàng)選擇題-2,-4,6,8,-10,-12,14,16,( ),( )
A.-17,-18
B.17,18
C.-18,-20
D.18,20
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1.單項(xiàng)選擇題12,13,15,18,22,( )
A.25
B.27
C.30
D.34
2.單項(xiàng)選擇題18,-27,36,( ),54
A.44
B.45
C.-45
D.-44
3.單項(xiàng)選擇題7/9,13/9,20/9,28/9,( )
A.25/9
B.37/9
C.26/9
D.8/3
4.單項(xiàng)選擇題0,6,24,60,120,( )
A.180
B.210
C.220
D.240
5.單項(xiàng)選擇題3/2,3,5,15/2,21/2,14,( )
A.17
B.18
C.19
D.20