下列关于大牧场放牧业叙述正确的是( )
A:多分布在半干旱、半湿润气候区
B:从农业分类讲属于粗放农业
C:美国和阿根廷的牧羊业地位重要
D:阿根廷的潘帕斯草原是大牧场放牧业的杰出代表
如图是眼球结构及成像示意图.下列有关叙述正确的是( )
Though he is at home, he doesn't feel for he has many things to do.
What’s the relationship between the two persons?