In our case, it's about leverage or chemistry or onion skins.
I have passed the exam.
It's not difficult, as long as you are serious.
Specific: lever principle, balance lever, and then hook code.
Chemistry, distinguish distilled water from hydrochloric acid, somehow (forgot)
Peel off the inner epidermis of onion with tweezers, put it on a glass sheet, drop water on it, and then cover the glass slide. If there are bubbles, take them out with a napkin.
If you want to be a good middle school above Kao Gao Pu, you must be an A, which is the highest level. They are all invigilated by their own school teachers, and they are generally A.
So don't worry, just be serious.