There is a lot of knowledge involved in the front. The original intention of the new textbook is to spiral up, but I think it is no joke to say that the light spiral does not rise now, especially for ordinary students. How do you use science in your exercise books? There is a big gap. I have one in my hand, too. It's really difficult and doesn't fit at all. Find a topic to talk about yourself, and delete what should be deleted, because liberal arts students really don't need to take 1-2, especially the first chapter, let alone whether this thing can be taken in the college entrance examination. ..... can be briefly said, but I don't think I need to practice for the time being, so I can't use it. ...

Vector? You mean the space vector? It's not in the textbook. Let's not talk about it for the time being. The progress is not allowed. If you find it useful when reviewing in senior three, talk about it. There should be plenty of time then.

Which chapter? Vector? There's nothing wrong with it. It's actually quite simple. It's just that students' computing ability is too poor ... if it's a liberal arts subject, I suggest not talking about it.