I passed in four years, and I have participated in global courses in these four years. The year with the highest probability of sensory problems is 15, which is basically 60%-80%. Other years are about half. It still has reference significance. If you have money, you can buy genuine ones. I asked my colleague for it, and he bought a whole set!

The most important thing is to rely on yourself. Now the exam is getting more and more difficult. The difficulty is that the exam needs to be understood. The problem is not the dead thing in the book as in previous years. Many questions need to be tested to infer the answers. If you bet the right question but don't understand it, you can't do it well. In short, if you have the energy to take the exam as soon as possible, it will become more and more difficult in the future.