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What are the methods and skills of doing multiple-choice questions in college entrance examination mathematics?
Mathematics multiple-choice questions are flexible use of knowledge, and the requirement of solving problems is only the result, not the process. Therefore, inverse method, estimation method, special case method, exclusion method and combination of numbers and shapes are all very powerful. If you can grasp the multiple-choice questions well, it will be easy to ask a question in one minute, and the question will not exceed five minutes. Because of the particularity of multiple-choice questions, it is proposed that solving multiple-choice questions requires "quickness, accuracy and cleverness" and taboo "making a mountain out of a molehill". Here are ten ways:

1 direct method

When multiple-choice questions are adapted from calculation questions, application questions, proof questions and judgment questions, they can be done directly according to calculation questions, application questions, proof questions and judgment questions. After determining the answer, you can find it in the options.

2. Screening method (exclusion method)

Get rid of the false and keep the true, screen out some conclusions that are easy to judge and irrelevant, narrow the selection range, and then get the correct answer from the remaining conclusions. If there is only one conclusion after screening out the problems, it is the option.

3. Special value method

According to the information provided in the answer, select some special cases for analysis, or calculate some special values, or replace the letter parameters with specific values, or take the proportional number as a specific number to bring people. In short, it is often very simple to change the general form into a special form before judging.

4. Verification method (alternative method)

Substitute each option into the stem one by one and verify it, or choose a special value for proper testing, or take other verification means to judge whether the choice is right or wrong.

5. Mirror image method

We can draw a sketch according to the meaning of the question first, and then draw a conclusion by referring to the practice, shape, position and nature of the characters and integrating the characteristics of the image.

6. Exploratory method

If you want to organize comprehensive and multi-object questions, you can establish geometric models and algebraic structures according to the meaning of the questions, and then try and choose by mistake, paying attention to the flexible use of the above methods.

7. Guess and answer (language sense method)

Multiple choice questions have the possibility of guessing points, which is called opportunity points. This kind of opportunity is equal for every candidate. Guess and answer, it's not like "click 1.2.3.4, click whomever you want" or "trivial". Instead, guess and answer in the selected options, and you can't use the method similar to mental retardation mentioned above when guessing. Choose whoever is pleasing to the eye and see which one is easier to choose. When you can't find sufficient basis to determine the correct option in the answer, you can read the question silently for several times, and you can determine the answer if you feel that it is not awkward to read and the language is fluent. This method is only used as a last resort, because most people will be flustered when they encounter a slightly more difficult question in the exam. In order to leave time for the big questions later, this method should be used at this time.

8. Characteristic method (analyze the characteristics of topic setting and branch selection, find the law, and summarize the method of correct judgment).

According to the characteristics of the stem, plus so many questions, you can look at the characteristics of the stem first, then at the options and conditioned reflex to choose, but you must step by step and pass the verification to get the correct answer.

Use the relationship between options, that is, use interference options to do the problem. Except for the correct answer, all multiple-choice questions are interference options. Unless it is a random option, you can use the interference of the options to do the problem. Generally, questioners don't make random choices and always give correct answers.

It may be the wrong result, so we can draw the correct conclusion with the help of this proposition process. If the two options have completely opposite meanings, there must be a correct answer between them. One of the four options does not belong to the same category, then the remaining three are options. If there are two options that cannot be classified, one of them will be selected as its own option according to the optimization method. There is only one answer. Compare the answer with other options. Use the connection between the valve stem and the option. You must examine the textbook knowledge in multiple-choice questions. In the process of doing the questions, you can judge which knowledge is related to the textbook.

Options that have nothing to do with this knowledge point can be eliminated immediately, most of them that are not closely related to the topic can be eliminated immediately, and those that answer irrelevant questions can be eliminated immediately.

9. Association method (similarity method) (decomposition method) deformation method of direct method

Sometimes when you look at a question, you feel that you have done it. At this time, you will connect the questions you have done before with the conclusions, see if there are similarities with your Lenovo, and look for connections and differences. You should be rigorous at this time, and you must not have the wrong mentality. It can't be about the same.

10. Valuation method

Some problems cannot (or are not necessary) be accurately calculated and judged due to the limitation of subject conditions. At this time, we can only get the correct judgment method from the surface by means of estimation, observation, analysis, comparison and calculation.

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