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20 15 is the physics problem of Sichuan college entrance examination difficult?
20 15 college entrance examination physics questions continue the consistent ideas of "paying attention to ability examination, leading quality education" and "striving for progress steadily, which is conducive to guiding physics teaching in middle schools and talent selection in colleges and universities", and pay attention to the "scientific, fair, accurate and standardized" of the whole examination questions. The content of the test questions is still dominated by mechanics and electromagnetism, and the test paper covers all the knowledge units in the Examination Outline. The whole volume mainly examines about 68 independent test sites (the knowledge items listed in the examination syllabus, the same below), and the coverage rate of knowledge test sites is about 58%. This set of papers mainly has the following characteristics:

1. The content of the proposition changes little, but the form changes greatly.

Different from previous years, this year is divided into physics, chemistry and biology, and each subject has its own proposition. The content is not much different from that in previous years, and we still pay attention to the examination of the main knowledge.

2. Closely follow the examination syllabus and pay attention to the examination of main knowledge and important contents.

The examination paper comprehensively examines the five abilities required by the Examination Outline: understanding ability, reasoning ability, comprehensive analysis ability, ability to deal with physical problems with applied mathematics and experimental ability. The paper focuses on the basic concepts and laws of physics. The knowledge involved in the test paper, such as uniform linear motion, Newton's second law, mechanical vibration and mechanical wave, optics, momentum theorem, kinetic energy theorem, energy transformation and conservation law, motion of charged objects in compound field, electromagnetic induction law, etc. , is not only the important content of middle school physics, but also the necessary physical knowledge for college science and engineering candidates. Through the examination of these contents, it can better reflect the examinee's mastery of middle school physics knowledge, and

3. Guide to return to teaching materials and emphasize ability test.

There are about 48 test questions, the materials of which are all from textbooks, which are the extension and expansion of textbooks or exercises (accounting for about 40% of the total score of physics), and strive to "rely on textbooks instead of textbooks, surpass textbooks without leaving textbooks". At the same time, the scenarios involved in the test questions are familiar to students' daily life, and are related to social hot issues and the latest scientific and technological development, which is conducive to guiding students to attach importance to the foundation, grasp the outline, consolidate the foundation and use knowledge flexibly.

While emphasizing the examination of students' basic knowledge, the examination paper pays more attention to students' flexible use and transfer of knowledge, and puts the examination of students' ability in the first place. The test questions are based on ability, and the ability test is strengthened. The question type seems to be a routine, but it implies the identification of candidates' ability. The scene creation and text expression in the test questions pay attention to the reality of middle school physics teaching and students' life, but the way of scene presentation and the angle of questioning are new. This will help to overcome the phenomenon that materials are more important than textbooks in college entrance examination review, and guide students to pay attention to textbooks, basic knowledge and basic skills. At the same time, it also takes into account the fairness of the test questions.