小测验：选择正确的单词

1. black sheep
   害群之马,败家子,败类
   
2. sheep dog
   n. 护羊狗
   
3. sheep pen
   n. 羊圈
   
4. mountain sheep
   山地野绵羊
   
5. sheep ked
   绵羊蜱
   
6. sheep's sorrel
   小酸模
   
7. merino sheep
   美利奴绵羊
   
8. sheep dip
   羊用防腐浸液
   
9. sheep sorrel
   n. [植]一种开红花的酸模
   

1. Dogs are often trained to herd sheep.
   人们常训练狗来牧羊。
2. There is a flock of sheep on the meadow.
   草地上有一群羊。
3. The sheep trod a path through the grass.
   羊群在草地上踩出一条路。
4. The farmers clipped 60 sheep this morning.
   农夫们今天早上剪了六十只羊的羊毛。
5. We have the finest breed of sheep.
   我们拥有最优品种的羊。

　3个名词解释