In the past years, logical judgment has always occupied a stable proportion. Some of these questions often take a long time when the examination time is not enough. So how can we shorten the time to do the problem and choose the best answer faster? Rational use of demonstration model may be a method for strengthening and weakening topics which account for the largest proportion in possibility reasoning. Below, Chinese public education takes you through an argument model and teaches you how to solve a logical judgment problem in 40 seconds.

In the topic of strengthening and weakening, there is such a common demonstration mode-taking data as an argument and finally drawing a conclusion. This demonstration model is called data demonstration. The core of choosing answers to such questions is to choose an option represented by data. Take the following title as an example:

In the past decade, the number of semiconductors produced by American semiconductor industry has increased by 200%, but the number of semiconductors produced by Japanese semiconductor industry has increased by 500%. Therefore, Japan now produces more semiconductors than the United States.

Which of the following is correct and can weaken the above proposition most?

A. In the past five years, the growth of semiconductors produced by the semiconductor industry in the United States was only 100%.

In the past ten years, the dollar value of semiconductors produced in the United States is higher than that produced in Japan.

Today, the proportion of American semiconductor exports in total export products is higher than that of ten years ago.

D Ten years ago, the United States produced 90% of the world's semiconductors, while Japan only produced 2%.

In order to weaken this proposition, we should first clarify the main line of the whole argument:

Analyzing the main line of argument, we can see that the problem is based on the growth rate of semiconductors in the United States and Japan in the past decade, and draw the conclusion that Japan now manufactures more semiconductors than the United States. The obvious loophole is that the current output value = the output value ten years ago * the growth rate of this decade, but now we don't know the output value ten years ago, so the conclusion is uncertain.

We need to find the weakest option: item A is about the past five years. Although there are data, the data of the last five years have no influence on our conclusion and cannot be weakened; Item b represents the dollar value of semiconductors in the past ten years. On the one hand, the value of the dollar cannot represent quantity; on the other hand, the total output of the past decade cannot replace the current output and cannot be weakened. Item c talks about the current proportion of American semiconductors in exports, and the topics are inconsistent and cannot be weakened; Item D shows that the output of the United States was 45 times that of Japan ten years ago, indicating that even after the growth, the output of the United States is much higher than that of Japan (18 times) now, which can be weakened. Choose d for this question.

Method cuddling: The problem of data argumentation is that there is a loophole between data and conclusion. No matter how to strengthen or weaken, the most direct way is to make it an inevitable reasoning by supplementing data. There is no data option or it doesn't matter, or on the premise of accepting the conclusion, it is better to demonstrate and refute the conclusion from the side. Directly locating options through data can help us directly locate options or reduce confusing options. For example, this question, B and C have no data and can be directly ruled out. A has different topics, so D is chosen.