For example, the difficulty of 2 1 is above average, the first question is easier and the second question is more difficult. This paper mainly investigates three special curves, parabola, hyperbola and ellipse, which students learned in senior three, and uses these three curves to transform according to the known conditions given in the question. The rest is the students' computing ability and equation solving ability, which most students can do on the whole.

202 1 College entrance examination papers are divided into several types: national grade A, national grade B, new college entrance examination, new college entrance examination and independent proposition papers. The test papers used in different regions are different, and the difficulty of the college entrance examination questions is also different.

202 1 Principles of Mathematics Proposition in College Entrance Examination

202 1 National College Entrance Examination Mathematics, carrying out the general requirements of the reform of college entrance examination content, implementing the educational policy of all-round development of morality, intelligence, physique, beauty and labor, paying attention to core literacy and highlighting the examination of key abilities, embodies the scientific selection function and educational orientation of college entrance examination mathematics. The test questions highlight the essence of mathematics, attach importance to rational thinking, and adhere to the proposition principle of literacy orientation and ability.

Advocate integrating theory with practice, apply what you have learned, pay attention to the important achievements of China's socialist construction and scientific and technological development, and reflect the application value of mathematics by designing real problem situations; Steadily promote reform, scientifically grasp the relationship between essential knowledge and key ability, and scientifically grasp the openness of mathematical problems and mathematical thinking.