【判断题】According to Porter, the policies of government and of business firms can enhance or detract from the four attributes that determine national competitive advantage.
【单选题】listen to the clip and complete each sentence with a proper word:I can’t talk to him if the football’s on. He just sits down and ______, and doesn’t listen to a word I say.
【判断题】According to Porter, the way to create superior value is to drive down the cost structure of the business and/or differentiate the product in some way so that consumers value it more.