1, I don't understand the language well, and I can't understand the questions (sometimes it's because I always like to go elsewhere, not because I'm not smart, but because of my thinking habits or special angles)

2. I didn't learn mathematics, or at least I was not skilled and did few problems.

3. Sometimes, if you do a lot of questions, you won't know the same test center if you change your vest, just like the new questions. This is a lack of ability to summarize and refine the general points of * * *, which can be practiced.