产业竞争结构分析中的五种基本竞争力量模型是由谁提出的？( )
A．安索夫
B．迈克尔波特
C．彼得圣吉
D．迈克尔哈默
参考答案：B
PowerPoint中Windows Media Player控件URL属性的含义是（）
A.可见性
B.有效性
C.视频文件路径
D.自动启动
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. \
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