社会分层
参考答案：
指依据一定的同一性标准，把社会成员划分为高低有序的不同等级、层次的过程和现象。
Now when people refer to England, you find Wales _____ as well.[ ]
A. to include
B. including
C. which includes
D. included
吊笼运行到停层站点不减速停层的故障原因是什么？
