我国的电信管理体制是指我国电信管理组织的（）和活动方式的总和。
A.机构设置
B.所处地位
C.职能权限划分
D.管理对象
参考答案：A, B, C
How many _______________ do you have? [ ]
A. English book
B. English books
C. Englishes book
We discussed where to go for the weekend, but we decided to stay at home ________.
A．at the end
B．by the end
C．in the end
D．on end
