The scores of examination institutions are accurate to some extent, but there is an error of about 1- 15, which can only be used as a reference.

On the one hand, the official has never published the correct answer and scoring standard, and the organization also relies on the team to do the questions, which inevitably differs from the standard answer; On the other hand, after candidates leave the examination room, their memory may be biased, and the answers filled in during the evaluation are inconsistent with those filled in the examination room, resulting in a large deviation in the evaluation.