Test questions add new content and complexity of thinking, which requires students to understand and read more questions.
The difficulty design of the topic is more challenging. In addition to examining students' examination strategies, we also examine students' mastery of textbook knowledge points and problem-solving ability.
In the eyes of some candidates, there may be subjective deviation in the overall difficulty. Because the understanding of knowledge points is different, the relative difficulty is also different.
Of course, the above is only one of the possible reasons, and I don't know the specific reasons. The authoritative explanation of the evaluation team and the analysis and discussion of more experts and educational institutions are also needed.