A、To join the local residents in their daily discussion about sports. B、To write articles about the local sports teams for Sport

W: If you live in the United States, there are a number of ways that you and your family can mix Well with the local residents. Many large American cities have sports teams. If you are working with Americans, it would be a good idea to find out about the local sports teams so that you can participate in the almost inevitable discussions about " how our team will do this year. " Sports Review is also a good source of information from which you can learn about the most popular sports in the country.
Most Americans are car owners and some are even obsessive about the subject. They can spend hours discussing the merits of foreign cars versus American cars, deciding on the best family car or the best sports car. And car repair is also a popular topic of discussion. You can contribute by talking about cars you have owned or by sharing information you’ve read in automotive magazines such as Car and Driver or Popular Mechanics.
Americans watch television almost every night and attend movies regularly so naturally television shows and the latest movies become topics for discussion. If you are unable to watch American television or attend American movies, reading the entertainment section of such magazines as Time and Newsweek will keep you up-to-date on what is popular in America. Reading these magazines will also give you a broad American perspective on current events in both America and the world. They are good resources for information that you can use in discussions.
Question No. 15 According to the speaker, why do we need to find out about the local sports teams in America?
Question No. 16 What magazines will give you information about American movies?
Question No. 17 Whom is the speaker addressing?
Question No. 18 What is the main idea of the talk?