The professor offers three reasons which may account for the repetition of the same TV commercials. The first reason lies in eco

The professor describes the reasons why television commercials are repeated so often. Explain the reasons with details.
You may begin to prepare your response after the beep. Please begin your response after the beep.
Please Listen Carefully.
Now listen to a conversation between a student and a teaching assistant.
Student Excuse me. I’m a new student in this college. I’ve got some questions about the elective courses. May I bother you for a few minutes?
Teaching Assistant Of course! It’s my pleasure to provide any information helpful to you.
Student I’ve read the notice on the bulletin board about the elective courses for new students, but I’m still puzzled how I should choose proper courses and get the credits.
Teaching Assistant Yeah. You know, there’re special requirements on elective courses for each student. Every student should fulfill the demanded credits for elective courses before graduation. For example, the requirement for international trade majors is 25 credits, and there are two groups of elective courses.
Student What are they?
Teaching Assistant One group are those organized and given by your own college and usually more closely related to your major. The other group are organized and given by other colleges and thus maybe not as related to your own major. But both of the two groups are available to you. You can choose from any of them according to your personal preference and timetable.
Student But how should I choose the courses? I have no idea if I should choose the first group or the second group.
Teaching Assistant Yeah. It’s really a question worth thinking about. My suggestion is that you make decisions according to your future plans and interests.
Student Could you explain it in detail, please?
Teaching Assistant I mean, if you’re really interested in your major and would like to deeply probe into the related disciplines, you can choose more of the first group ’cause they’re more closely related to you major. But if you’re more willing to develop miscellaneous knowledge and skills, you can spend more time on the second group’cause they’re helpful in broadening one’s horizon.
Student That sounds reasonable. It seems that I should really think it over and make a proper decision.
Teaching Assistant That’s right. Elective courses are quite an important part of the study program.
Student That’s really true. Well, you’ve really shed some light on this problem. Thank you very much!
Teaching Assistant You’re welcome. Hope you’ll be happy with your courses.