客户关系的价值性是指关系的建立、维系在于它为双方提供利益，使双方都得到各自所需的价值。

A．Stress when visiting another culture being cyclical: two steps forward and one step back
B．A prediction about adaptation: some adapt very well, and others not at all
C．The fact that adaptation is unpredictable, like a “W”
D．A description of what happens when one travels abroad and then returns home