Probability is a classical probability and a geometric probability, which belongs to a sub-topic. .
As long as you remember the theorems in the book, solid geometry will be easy to handle. Generally, straight lines are parallel and perpendicular to the plane. As long as the auxiliary lines are right, this problem is generally not a big problem.
The formula for finding the general term of series, as well as the summation of column terms, dislocation subtraction and so on. , pay attention to the application of the method. . .
Conic curve is usually the last question. Usually, the first question is to find an analytical formula, which is relatively simple. The last two questions belong to advanced questions, which ordinary students can't do. .
Finally, usually do more questions and pay attention to the summary of questions and methods. .