單項(xiàng)選擇題1.5,4.5,13.5,16.5,()

A.21.5
B.34.5
C.49.5
D.47.5


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1.單項(xiàng)選擇題-1,6,-15,28,()

A.-45
B.45
C.35
D.-35

2.單項(xiàng)選擇題7,14,10,11,14,9,(),()

A.19,8
B.18,9
C.17,8
D.16,7

3.單項(xiàng)選擇題7,23,55,()

A.108
B.109
C.110
D.121

4.單項(xiàng)選擇題6,7,3,O,3,3,6,9,()

A.5
B.6
C.7
D.8

5.單項(xiàng)選擇題28,18,32,14,36,10,()

A.42
B.40
C.6
D.4

6.單項(xiàng)選擇題227,238,251,259,()

A.263
B.273
C.275
D.299

7.單項(xiàng)選擇題2,0,7,4,()

A.16
B.21
C.18
D.24

8.單項(xiàng)選擇題215,124,63,()

A.8
B.9
C.26
D.15

9.單項(xiàng)選擇題3,3,4,5,7,7,11,9,(),()

A.13,11
B.16,12
C.18,11
D.17,13

10.單項(xiàng)選擇題4,16,72,624,()

A.625
B.9649
C.9744
D.10249