In fact, you are annoyed by this mistake. The easiest choice is multiple-choice questions, because there are four options in multiple-choice questions, and now they are generally single-choice questions. Even if you can't do it at all, there is a quarter of the correct probability of choosing any one.

For multiple-choice questions, there are still some skills:

1. According to the conditions of the given topic, calculate by yourself and compare with the given answer, and you can get the solution.

2. If it is really impossible to deduce the answer from the conditions, you can refer to the options given, substitute the results of each option into the original question, and try to know which one is the correct answer.

3. Some multiple-choice questions can't be substituted into the calculation, which is related to numbers. Then you can draw pictures or scatter pieces of paper to get the correct answer.

4. If you can't calculate, reason and experiment, you might as well remove the most impossible answer from the four answers by elimination. If there is only one option left in the end, it is the correct answer. If there are two left, you can guess one at random, and the correct rate is 50%.

(Note: The method of rolling dice or drawing lots mentioned by some comrades is the least desirable. It is not scientific at all. The only advantage is that you don't have to use your head, but the correctness cannot be guaranteed. This is just my own multiple-choice experience, for reference only. )