第20题: [单项选择]Advertisement can increase demand ______. A. all the time B. in any circumstances C. in a growing market D. in a shrinking market 参考答案:C 答案解析:本题是考查对文中这句话的理解:When the market is growing,advertisement helps to increase demand(当一个市场处于成长期的时候,广告帮助这