undercover marketing, is that it doesn't say anywhere that we're actually looking at any type of promotion. I remember Sylvester Stallone took a ＄500,000 payment from one tobacco company to smoke its brand in three of his films.

　　The reason why undercover marketing works is that people tend to trust it more than if they know that it's an advertisement that a company has paid for. And, it's a lot easier to create_a_buzz with a marketing campaign that people don't know is a marketing campaign. One great example is when Ray­Ban started their marketing campaign on YouTube called Sunglass Catch. Right now, it has more than 5.2 million views, and I think that the number would have been much lower if people had known that it was a paid marketing campaign by Ray­Ban.

　　The most obvious risk for an undercover marketing campaign is failing to keep the campaign hidden. If people feel, or understand that they are being manipulated (操纵) into liking the product, they might become angry at the product and/or at the company. This way, especially with the speed of communication in social media, a failed undercover marketing campaign might hurt a company really bad.

　　语篇解读：本文是一篇说明文。文章主要介绍了秘密营销的好处及风险。

　　5．The author didn't go to the All You Can Eat Pizza because ________.

　　A．he was very busy that day

　　B．he was interested in the man

　　C．he wasn't attracted by the sign

　　D．he didn't understand the sign at all

　　解析：选C　推理判断题。由第二段中的"this man and his sign was more or less the opposite of undercover marketing. He was telling the world who he was working for"可推断，作者之所以没有去那家店是因为男子做广告的方式过于直白、明显，他没有被男子的招牌吸引。

　　6．Why did the tobacco company give Sylvester Stallone money?

　　A．Because the company workers liked his films.

　　B．Because he marketed its products in films.

　　C．Because he advertised its brand in public.

　　D．Because he was a famous person.

　　解析：选B　细节理解题。由第三段末的"Sylvester Stallone took a ＄500,000 payment from one tobacco company to smoke its brand in three of his films."可知。

7．The underlined part "create a buzz" in Paragraph 4 can be replaced by "________"．