商品房销售计价方式包括()。
A.按均摊建筑面积计价
B.按套内使用面积计价
C.按建筑面积计价
D.按套(单元)计价
E.按套内建筑面积计价
参考答案:C, D, E
.After boarding the plane, I found my seat _____ by a police officer, wondering whether I got the wrong flight.
A.occupied
B.conquered
C.possessed
D.owned
简述正式群体的主要功能。