It is fair for candidates to keep the difficulty stable, because candidates will do a lot of exercises before the exam. Through the exam questions in previous years, we can find out the exam mode and exam questions, so that we can adapt ourselves to the exam and answer questions, and we will not lose the exam because we are unfamiliar with the papers, and the difficulty will remain relatively stable, which will make students feel stable because they are prepared, which is more conducive to the good play of the examination room.