国际商务谈判的目标层次分为？
参考答案：
最高目标〉实际需求目标≥可接受目标≥最低目标
What the doctor warned us is that the _____ sleep may cause anger，poor memory and poor
concentration. [ ]
A. want in
B. plenty of
C. lack in
D. lack of
消费函数
