1 20 18 national college entrance examination average score 20 18 national college entrance examination average score (Shanxi)

20 18 comprehensive 142. 16, higher than last year 17.7 points.

20 18, with an average physical score of 48.83, 5.6 points higher than last year.

The average score of chemistry in 20 18 college entrance examination is 42.69, which is 6.4 points higher than last year.

The average score of biology in the 20 18 college entrance examination was 50.64, which was 5.7 points higher than last year.

20 18 national college entrance examination average score (Hunan)

Comprehensive average of science151;

The average score of science is 405.71;

Average score of 2065438+2008 National College Entrance Examination (Guangxi)

Average score of science mathematics: 60.10;

Comprehensive average score of science126.36;

1 20 18 difficulty review of national college entrance examination; Review and interpretation of physical difficulty of national examination papers.

20 18 physics test paper pays attention to the examination of the main contents of middle school physics, with wide coverage and appropriate proportion; The structure, type and quantity of test papers remain stable; The meaning of the question is clear, rigorous and standardized, and there is no scientific problem; The reading of test questions is moderate. Question 16: Two balls connected by light rope examine students' physical core laws such as establishing circular motion model, conservation law of mechanical energy, kinetic energy theorem and centripetal dynamic equation.

Analysis on the chemical difficulty of national examination papers

The overall design of the test paper pays attention to the examination of basic knowledge, basic ability and basic methods. For example, question 8 examines the basic types of organic reactions; Question 9 examines the basic knowledge of periodic laws of elements and compounds; Question 1 1 Examine the basic principle of the primary battery; 12 question examines the nature and identification of substances.

The experimental questions highlight the characteristics of chemistry, and examine the basic operation of the experiment, the control of experimental conditions, the inspection, separation and purification of substances and other experimental contents. For example, in question 28, the properties of Fe2 and Fe3 were explored through design experiments. The design of the test questions is novel, which not only examines students' basic knowledge of chemistry and experimental ability, but also examines students' comprehensive ability and inquiry ability.

Analysis on the Biological Difficulty of National Paper

20 18 biological examination paper examines the life course of cells, taking into account some detailed knowledge, such as neurotransmitters dopamine and carbon monoxide. , thus expanding the scope of the exam.

The concept of new curriculum reform, such as multiple-choice question 3 1, is based on experimental phenomena, and students are investigated to explore the relationship between photosynthesis and respiration of two important physiological activities of plants by using the difference of dependent variables and the quantitative change of carbon dioxide as the starting point. c _ Kan()；