选出不同类的单词( )
A:family
B:uncle
C:aunt
25 + 34 =____
56 ﹣ 56 =____
3× 49 =____
47 ÷ 34 =____
37 + 47 =____
12 ÷ 78 =____
1﹣ 15 =____
38 × 67 =____