A、By studying with the traditional approach. B、By keeping names, places and dates in mind. C、By putting forward questions about

What is the purpose of learning history? What’s the best way to teach it? Recently educators are rethinking their approach to history education. One new view is that it should be taught from the present backwards, keeping in mind the question," Why is it like this today?" Let me give you an example. The traditional approach to teaching the history of business, of corporation, always begins with the history of the Industrial Revolution, and proceeds slowly through all the government action over three hundred years to the present. Critics say that method, making students only memorize names, places, and dates about the Industrial Revolution is a waste of time. Instead, it’s more effective for learners to begin with a present-day question, like "Why is the economy so bad these days?" and then go back to examine the history of business to find the answer. In other words, beginning with the question about the present is more effective than rote memorization because it demonstrates a cause-and-effect approach to the study of history. And when students begin to see history as a cause-and-effect relationship, they can understand why the study of history is important. Questions 13 to 15 are based on the passage you have just heard.
13. Why do critics regard only memorizing historical facts as a waste of time?
14. How can students see history as a "cause-and-effect" relationship?
15. What is the main point of this talk?