2. If there is only the result of the previous step and there is no process, give 1 point, which will not affect the subsequent scores;

3. The result of the previous step is correct, but there is no deduction for the lack of a certain step above;

4. If the simplification of a step in the process is wrong, only the score points before this step are given.

Extended data:

The college entrance examination questions in different provinces are different, and the scores of solid geometry are different. According to the examination questions in previous years, solid geometry mainly examines the relationship between points, lines and surfaces, with cones in the majority and lines and surfaces in the majority. Most of them should investigate the combination of cone or cylinder and sphere, paying special attention to three views.

There is little difference in the difficulty between liberal arts and science examination questions, but the liberal arts topic is slightly simpler. Liberal arts and science are two small questions (a multiple-choice question, a fill-in-the-blank question or two multiple-choice questions) and a big question, with 5 points for a small question and 0/2 points for a big question, and 22 points for * * *.