2. Decisive economy is good. In the past, when I hesitated between the two, the teacher would recommend eco, so that I would choose a wider range of majors in the future and it would be easy to study business again. Moreover, in terms of difficulty, the economic examination consists of multiple-choice questions and compositions, and all business subjects are compositions.
3. Generally choose 3-4 science plus 1-2 liberal arts. The most selected combinations are: mathematics, science, English and economics. I suggest you choose physics, because it's really simple. Some people can get at least B, and they can get A if they work hard. If they are good at English, they can consider history and geography. Computers and art.