展品运输大致可以分（）阶段
A.运输策划
B.去程运输
C.回程运输
D.运输保险
参考答案：A, B, C
抛物线y=(x-1)2+2的顶点坐标是
A．(1，-2)
B．(1，2)
C．(-1，2)
D．(-1，-2)
The meaning of the sentence is（）; you can interpret it in several ways.
A．skeptical
B．intelligible
C．ambiguous
D．exclusive
