1. 从右栏中选择正确的翻译，并将序号写在题前括号里

18只奶牛                  A. It's thirteen.

爷爷和奶奶                  B. Dear YangMing

等于13                     C. twenty horses

20匹马                     D. grandpa and grandma

亲爱的杨明                   E. eighteen cows