In general, you should choose junior high school knowledge first and use your junior high school knowledge to solve problems. After all, the senior high school entrance examination examines your junior high school knowledge. If you have a problem, you can't solve it with your junior high school knowledge. At this time, you can completely apply the content and knowledge of high school to solve it. Reason: Science is an objective fact, as long as you do it right and use it well. The marking teacher can generally understand your thoughts. You should have mastered high school and low level knowledge in junior high school, but you should not have mastered high level knowledge. If you can, you can go directly to the college entrance examination. So the knowledge you used in high school is basically common sense in the eyes of teachers, and every teacher knows it. When marking papers, the teacher will be proud of you when he sees such an answer.

Remember: it must be used correctly. Don't teach fish to swim! ! ! ! ! ! ! ! ! !