2. If you encounter problems in doing the problem, and you still have no clue after thinking for a few minutes, then put it down for the time being and start doing other problems. Don't waste a lot of time on one question, so that the following questions can't be completed with good quality and quantity.
3. Adjust the time of physics and chemistry properly during the exam. For your dominant subjects, you should answer them as soon as possible under the condition of ensuring the correct rate, which will save more time for the slightly inferior subjects. This will ensure the highest score.