1, the elimination method, the option to eliminate errors.

You should know that multiple-choice questions in math exams are very important grading questions. If you are not sure about the answer, you should first abandon the wrong answer that does not meet the requirements of the question type, then narrow the selection range by screening out some conclusions that are easy to judge and irrelevant, and then get the correct answer from the remaining conclusions.

2. Alternative options

By observing, analyzing and judging the test questions, each selected branch is substituted into the stem one by one for verification, or a special value is appropriately selected for verification, or other verification means are adopted to judge whether the selected branch is right or wrong.

3. Simplify the question and work out the answer from what is known.

Some multiple-choice questions are adapted from calculation questions, application questions, proof questions and judgment questions. This kind of problem can directly proceed from the conditions of the problem, use the known conditions, related formulas, axioms, theorems and rules, and draw the correct conclusion through accurate operation, rigorous reasoning and reasonable verification, so as to determine the method of choosing branches.

4. Consider the examination questions from the perspective of transformation.

Some multiple-choice questions are difficult to solve directly by conventional methods. It is often very simple to choose some special cases for analysis, or to choose some special values for calculation, or to change the general form into a special form with specific values instead of letter parameters, and then to judge.

Step 5 draw a schematic diagram

In the process of answering multiple-choice questions, you can draw a sketch according to the meaning of the question, and then refer to the practice, shape, position and nature of the graphic, and synthesize the characteristics of the image to draw a conclusion.

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