The same is 2B pencil 10 sell 5 yuan also sell 9 yuan
Last night, in a stationery wholesale store in Xi'an Chengdong, there are many 2B pencil brands here, such as Zhonghua, Mark, etc., which will soon be in the middle school entrance examination, and the sales volume is very good.

The reporter asked four merchants on the grounds of purchasing 10 Zhonghua 2B pencils. The prices were different, ranging from 5 yuan to 9 yuan.

“It’s all 2B pencils, the same brand, why is the price different?”

Merchants said that there are two types of 2B pencils here, and the production venues are different. One is the 2B pencil used for examinations. The price is more expensive, and the other is for primary school students to do their homework.

"5 yuan for 10 yuan, the exam is no problem..." Inquiring about this, the merchant initially expressed affirmation, but after repeated questioning by reporters, he still suggested to buy a higher price 2B pencil.

It is understood that graphite pencils have different concentrations, which are represented by 6H, 5H, ..., B, 2B, ..., 6B, respectively, the 6H concentration is the lightest, and the concentration is the deepest. The concentration of 2B pencil is relatively deep, but it can be easily cleaned with an eraser without leaving obvious traces. It is currently used in various standardized tests.

Five methods teach you to distinguish 2B pencils
A few days ago, the reporter interviewed the staff of the domestic market department of "China First Pencil Co., Ltd.". The staff said that you must go to the regular store to buy 2B pencils, and remind you to distinguish between true and false 2B pencils should pay attention to five aspects:

1 look at the section
The high-quality pencil has a flat cross section, the lead core is centered, and the lead core is relatively complete; the inferior pencil has a flat cross section, and the lead core is eccentric, and some lead cores have large defects.

2 look at the paint
The surface of the genuine pencil paint is smooth and clean, and the 2B white platinum mark is printed on three sides, and the three marks printed on the same level are clear, the print is clear and there is no missing word; the surface of the fake pencil is very poor, and the printed word is printed. Very vague, there is a lack of words.

3 see quality
Brand-name pencils are fluent in writing, and they do not break the core when they are curled with a pencil sharpener; while the counterfeit pencil lead core is liable to cause severe eccentricity, and it is easy to break the core during coiling.

4 see the price
Every 2B pencil that sells for less than $0.50 may have problems.

5 look at the outer packaging
The original pencil pattern is clear, the wood is soft and hard, and it is dark red. The fake logo is not complete, the font is large and small, the surface is rough, and the wood is white or yellowish after being cut.

Why use a 2B pencil for the exam?

On the official website of "China First Pencil Co., Ltd.", it is clearly stated that due to the high speed of computer scoring, various large-scale examinations nowadays can be selected as long as the test questions have exact answers. The candidate will fill the selected answer with a pencil on the answer sheet, and then the photoelectric reader will use the light reflection principle to scan the answer sheet. Since some of the questions need to be corrected after rethinking, checking, or need to be erased due to incorrect position filling, the modification will be inevitable. If the concentration of the pencil you use is too deep, say 4B-6B, it will be blacked out. If you wipe it off, you will find it difficult to wipe it completely. If you rub it hard, you will probably answer it. The card is broken, so that a trace of the error remains on the answer sheet. When the photoelectric reader scans, it is possible to identify the trace and mistakenly think it is your answer.

If the concentration of the pencil you use is too shallow, for example, the H-class pencil, the handwriting will be very light, which will also make the recognition of the photoelectric reader difficult. The photoelectric reader will probably give a lighter answer. Ignore and as no choice. As mentioned above, the concentration of 2B pencil is moderate, which is in line with the requirements of computer scoring.

Can a pencil of HB, B or 3B be used?

HB, B or 3B pencils are not completely unusable, but it is recommended not to use them. The difference between HB, B, 2B, and 3B is not very large. If the pencil is lightly coated, it has little difference with the concentration of 2B; similarly, if the HB and B pencils are applied a few times and applied deeper, the effect similar to the concentration of 2B can be achieved. However, When using the HB, B or 3B pencil test, always pay attention to the "fire" grasp every time you fill in the answer. In the middle of the intense test, this is obviously difficult to achieve, so in the important occasion of the test. If you don't have a 2B pencil, it's better to have trouble, buy some!

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