It can be very useful or worthless, depending on what you do in the future. Some people say that youth means infinite possibilities, but the premise of this infinite possibility is that your basic knowledge is completely complete. If you don't know what you can do in the future and what you are interested in, you might as well learn everything.

Language: fluency, appropriateness, grace and grace depend on it.

Mathematics: the foundation of all engineering science majors, the latest DNA, electrification, aerospace, aircraft carrier, robot, computer, etc. As long as it is high-tech, it is inseparable from mathematics.

Geography: Take Wan Li Road, read thousands of books, and go hand in hand. It can enrich your experience and increase your knowledge. Astronomy and geography know everything, which is the attribute of a wise man, indicating that you are knowledgeable. Nowadays, many people like to travel. What do you want to travel for? Isn't it just to see the outside world? It's all geographical.

Politics: What is the hottest now, civil servants are the hottest, and officials are the hottest. If an official does not consider fighting for his father, what to rely on depends on emotional intelligence, superb political sensitivity and far-reaching political vision. You can only cultivate this skill by politics. In fact, the most important thing is that philosophy can cultivate your correct world outlook and values and let you know what is right and what is wrong. That's all that matters. Some people always say that people are ignorant and brainwashed. People with good politics can distinguish right from wrong and have their own ideas. How could they be brainwashed?

Of course, everything in the textbook may not be used, and it may not be all right. Take the essence and discard the dross. Of course, in order to further study, it is better to accept all of them.