First, the reason analysis

Iodine is a medical product, which is usually used for skin disinfection. It is an alcohol solution containing iodide, which contains alcohol. But this kind of wine can't be drunk, because the concentration is too high, which will cause harm to human body. Iodine has a broad-spectrum bactericidal effect, which can kill a variety of bacteria, viruses and fungi, and is suitable for disinfection and treatment of various skin wounds.

Two. Introduction of iodine

Iodine is a medical product, which is usually used for skin disinfection. It is an alcohol solution containing iodide, which contains alcohol. But this kind of wine can't be drunk, because the concentration is too high, which will cause harm to human body. The scientific name of tincture of iodine is tincture of iodine, which is a reddish-brown liquid. The main components are iodine and potassium iodide, iodine and ethanol are particularly smelly, and the color becomes darker with the increase of concentration.

Iodine can also be used as a disinfectant for drinking water. Adding 3 drops of 2% iodine to 500ml water can kill bacteria, amoeba and other microorganisms in water within 15min, and the water has no odor. Although iodine is widely used, we should pay attention to it when using it, and we should not use it at will. Before use, you need to know its usage and precautions to avoid accidents.

Introduction and origin of brain teasers;

1, Introduction to Brainstorming

Brainstorming means that when thinking encounters special obstacles, you should quickly leave the habit of thinking and think about the problem from other aspects. Now refers to some intellectual questions that can't be answered by the usual way of thinking. Brainstorming covers a wide range: educational, funny, mathematical, adult and so on. ?

Brainstorming is a kind of entertainment and a popular word game. This word game has an obvious feature, the title is very common, but the answer is very irritating or funny, and sometimes it plays an indirect role in swearing. Once cracked, it's amazing. So brain teasers can also adjust the atmosphere of the party.

2. The origin of brain teasers

Brainstorming originated in ancient India. Brainstorming is a series of complete comic jokes published by the culture of the times on 1989 12.06, which changed from the comic question on the previous page to the unexpected answer after flipping through it. At that time, there was a great popularity in Taiwan Province society, and all the streets and alleys were asking each other questions, which turned into a pattern of cold jokes.