题目内容
试题答案
12-3=
[ ]
A.7
B.8
C.9
18-9=
A.5
B.9
C.11
D.17
12-5=
C.15
13-6=
B.6
C.7
D.8
13-8=
B.12
C.14
D.16
13-9=
A.2
C.4
15-9=
A.15
C.5
D.4
A.0
B.4