各单位制订的内部会计制度，也是国家统一的会计制度的重要组成部分。()
参考答案：错
The singers _____ from the whole country are expected to bring us a wonderful performance this weekend.
A．selecting
B．selected
C．having been selected
D．to select
一个人站在南极点上四面八方都是[ ]
A．西
B．北
C．南
D．东
