第21题: [单项选择]The advertisement claims that people can get Dow Jones News by ______. A. choosing Scottrade B. paying $ 30 C. investing $300,000 D. doing nothing 参考答案:A 答案解析:[注释] 从这则广告的第一句Get Dow Jones Real-Time News for Investors at no charge with your Scottrade account!可以