E-commerce does not require mathematical knowledge. Because you are studying electronic "business", not computer;

2.

Foreign trade e-commerce needs to master English. You are only in the third grade. Even if you read "New Concept" by yourself, you should greatly improve your English level within three years. The key is whether you want to learn or not. With English ability, the road will be much wider in the future;

3. car maintenance ... girls forget it, unless you are good at it;

4. Computer applications. It depends mainly on your interest. E-commerce is more market-oriented and feels more suitable for you.

In fact, I don't think it matters what degree I get from studying e-commerce. The difference between secondary school students and universities will not be particularly great. Again, the key is to look at yourself. For example, self-study some knowledge related to e-commerce, such as logistics and supply chain management. Study hard and the future is in your own hands.