It is easier to assign points to the two disciplines of geography and politics, one is that there are a large number of art students and sports students who choose history and geography, and these students focus on professional courses, and the investment in cultural courses is not high, so that they have a certain lower limit guarantee, and the group of academic tyrants often gathers science physics and chemistry students also have a high upper limit breakthrough possibility.
Although the best students in physics and chemistry in high school choose science collectively, the best students in history and geography also choose science majors, that is, the best liberal arts and science are a group of people, and the ranking competition pressure will be greater if this group of people chooses which subject, and chemistry and biology are often their first choice.
In this case, many students who choose science but have average grades tend to choose geography and politics, so as to achieve dislocation competition, and this part of the science students choose the liberal arts, which can be more easily improved in the assignment of points, and it will not increase the difficulty of the liberal arts students to be assigned points, because this part of the science students is not a top-notch group, and the liberal arts students still have a high upper limit to break through the space.
However, after these science students choose geography and politics, the difficulty of assigning scores to chemistry and biology has also increased, and the top students are still there, but the denominator is reduced, and the upper limit is easy to rise, but the lower limit is easy to fall.
The reason why the top students gather in physics and biology instead of choosing geography and politics is that chemistry and biology are pure science subjects, with a large degree of differentiation and little chance in examinations, and the advantages of their scientific thinking ability can be better reflected in their academic performance.
Chemistry has always been a combination of scholars, is the most competitive discipline before the physicochemical binding, geography and biology and politics are comparable, but after the physicochemical bundling, with the increase of the selection of physicochemical students, the difficulty of chemistry has decreased, while the difficulty of biology has increased significantly, in a large number of students no longer choose physicophysical, but geography and biology choose one of the two, with not less than the competitive intensity of chemistry.