Very useful. The main purpose of the interview is

the examiner

gives the score and there is no fixed answer, so it is very important to give the examiner the first impression. Training can help you grasp Pay attention to many details and give the examiner the most standard answer, so that your

score

can be improved,

the exam editor

The interview is not like the qualification interview. Sometimes a slight mistake in the interview can get you kicked out. I took the exam for 2 years. In the first year, I thought I could do it, so I took the exam directly, and the result was a game

over, I applied for the training course in the second year

and passed the exam