【正确答案】The basic function of advertisements is to convey information. If you want to tell somebody something, you have to stimulate his interest and attention. This is the truth in interpersonal communication and mass communication. Only by drawing audiences' attention can an advertisement convince them to believe a certain idea. Thanks to the popularity of celebrities, advertisements endorsed by celebrities can easily draw people's attention away from complex environment, thus making the products and the advertisements be the focus of the public. Because of the celebrities, an originally unknown brand will immediately be taken seriously and stand out among a clutter of information, and the popularity of the product will be enhanced in a short time.