I'm working on the problem of a hundred schools' alliance, and the famous schools are digging up some trivial things now, so that students don't lose points in these aspects. There are some difficult problems in this series. If the score is not too high, it is recommended to do express delivery. My classmate said it was ok.

The college entrance examination questions were finished years ago. The so-called betting questions don't exist at all, but the big brands have a large number of questions and can only hit some test sites in the trunk. You can have a look if you don't believe me.

45 sets is too much. I will go back to the textbook in the last month. It is suggested to do some real college entrance examination questions directly, and you can skip what you have done.