【正确答案】
D
【答案解析】[听力原文] When you turn on the radio, you hear an advertisement. When you watch television, you hear and see an advertisement. If you turn the pages of a newspaper or magazine, again you find an advertisement. If you walk down the street, you see one advertising board after another. All day, every day, people who want to sell you something compete to catch your attention. As a result, advertisements are almost everywhere. In the West, advertisements are the fuel that makes mass media work. The government does not give money to mass media such as TV stations, newspapers, magazines and radio stations. They are all owned privately. So where does the money come from? From advertisements. Without advertisements, there would not be these private businesses. Have you ever asked yourself what advertising is? Through the years, people have given different answers to the question. For some time it was felt that advertising was a means of 'keeping your name before the public.' And some people thought that advertising was 'troth well told.' Now more and more people describe it in this way: Advertising is the paid, non-personal, and usually persuasive description of goods, services and ideas through various media. All advertisements try to make people believe that the product, idea, or service advertised can do well to them. Advertisements exist everywhere in our lives. What is the passage mainly about? 选项中出现较多的单词是advertisement，故很明显，录音内容和广告有关系。这篇文章开篇就提到了广播、电视、报纸上的广告，然后讲了广告的定义，结尾说广告到处都存在，这表明本篇讲的是广告的繁荣发展。所以D正确。