I think this is a very normal thing. After all, it is an optional exam. If the topic of the math test paper is not difficult, then there is no point in holding this exam. After all, it is a selective examination to select some top talents to enter this higher education. There is no need to take the test paper because it is not difficult to learn. If it is very simple, then the level will not be tested.
Higher education can be said that this exam belongs to an exam to enter higher education, so the difficulty is naturally very high. After all, it is to enter higher education, because we have received basic education before, so it is natural and normal to enter high school education this time. If it's not difficult, it doesn't make any sense. After all, you must have a certain level to enter higher education. If there is no corresponding level,
Generally speaking, mathematics is the most difficult subject for the college entrance examination. After all, it is an attempt to see how everyone's level is. Those who can persist in taking the college entrance examination today are capable people. After all, not everyone can make it to this day, which is why this math exam is so difficult.