Experience sharing: problems with black and white graphics can be calculated in black and white.

In the national examination, graphic reasoning generally occupied 10. There are various rules in this 10 question, which requires the majority of candidates to see the rules clearly and choose the correct answer. Due to the tight time, many candidates are easily confused in the examination room and finally choose to give up. In the fierce competition of the national examination, if you can hit this 10 question, you will undoubtedly gain more assurance for yourself to enter the interview to some extent. So, how to break through graphic reasoning? In fact, by summing up the national examination questions in the past 10, we will find the high-frequency test sites in graphic reasoning, and by mastering these high-frequency test sites, we will overcome the difficulties in graphic reasoning.

High frequency test center 3? Black and white block

Black and white block is a kind of figure that often appears in the national examination. The common examination methods are as follows.

Test center 1. Black and white operation

Graphic features have the same outline and different internal colors.

Method black+white =? Black+black =? White+black =? White+white =?

Example 1

Answer a

Solution thinking

The first step is to observe the graph.

The outline is the same, but the interior color is different. You can know the black and white operation.

The second step is to identify the options.

According to the first group, white+black = white, white+white = black, black+white = white, black+white = white. So the answer is a.

Test center 2. Location category

The graphic feature elements are the same, but their positions are different.

Change mode translation, rotation

Example 2

Answer b

Solution thinking

The first step is to observe the graph.

The elements are the same, but the positions are different. The first group of black blocks is obtained by translation, and the second group of black blocks is obtained by rotation.

The second step is to identify the options.

The second group of graphic elements are the same, and the whole group rotates 1 grid counterclockwise, indicating that the correct option is B.

Test center 3. Quantity category

Example 3

Answer c

Solution thinking

The number of graphic black blocks is inconsistent. Investigate the number category. For Jiugongge, firstly, horizontally, the number of black blocks in the first horizontal row is 7, 8 and 9 respectively, so option B can be excluded, and then observe the first horizontal row, and all black blocks are scattered; In the second row, there are two black blocks together; There are three black blocks beside the third row, so the correct answer is C.