某观测场西边有两栋楼房，视宽度角分别为18度和20度，其间间距24米，他们应作为孤立
题型：判断题
问题：
某观测场西边有两栋楼房，视宽度角分别为18度和20度，其间间距24米，他们应作为孤立障碍物看待。
题型：判断题
看图，选出正确的单词填空完成句子。
1. Li Ming puts on his _____________ 
(skirt, shirt).
2. He puts on his _____________ 
(pants, socks and shoes, hat and gloves)
3. This is a pair of _____________ 
(socks, shoes)
4．These new _____________ 
(gloves, boots) are just right!
5. That pair of _____________ 
(socks, slippers) is too big!