1. Take a look: It is important to check whether the milk next to it has a certificate, production date, manufacturer and shelf life. If which version is not an important right, it is definitely not three products and harmful milk.

2. Smell: There should be no harm in doing experiments with milk, such as watching and smelling. Then, when doing experiments with water, drugs, property, paper, etc. If you have any bad behavior, you should tell others even if you start.

3. Packaging: Observe whether there are other bad fonts and other things that need to be observed in milk bags and bottles. If there is anything wrong, be sure to check it in time and tell others.

Extended data:

Precautions:

1, wash your hands before drinking milk, keep it clean, and prevent bacteria from entering through intubation.

2. Don't drink milk on an empty stomach: Many people drink milk on an empty stomach after getting up in the morning, and even take milk as breakfast and don't eat other foods. In fact, this is a very wrong way to drink milk. Because drinking milk on an empty stomach is a waste, people are hungry, and the demand for energy is relatively large.

3. Take out the milk immediately after it is boiled: after the milk is heated, stop heating immediately when it is boiled first, otherwise it will easily reduce the nutrients. If milk is cooked for a long time, it will turn brown and lose its taste and vitamin content, which is not conducive to our nutritional intake.

References:

Baidu encyclopedia-milk

References:

Baidu encyclopedia-Yili