在市场活动中,资源配置处于无效或低效率的状态被称作()
A.市场失灵
B.外部效应
C.免费搭车
D.寻租
参考答案:A
I'm afraid Mr. Harding _____ see you now. He's busy. [ ]
A. can't
B. mustn't
C. shouldn't
D. needn't
We had guests last night who have not stayed in a B&B hotel ago. They did not want breakfast because that they were going out early in the morning. They came back lately and had some tea. I came into the living room and saw one of them just go through the kitchen door but turn on the light. He was looking for a glass the cupboard. He had no ideas that the kitchen was not for guests. I just smiled to me and thought, "What can I do We are guests after all. \
______