冰箱不是“保险箱”，这样放食物很危险
Many people keep food in the fridge for a long time and still eat it. But this habit is not safe at all.
The fridge can only keep food cool. It cannot kill bad germs (病菌). Many dangerous germs can still live and grow in low temperatures (低温). They will make people sick.
We need to use the fridge in the right way. First, we should clean the fridge often. It can stop bad germs from growing. Second, we must put different food in separate (分开的) places. It can stop germs from spreading to other food. Third, never put eggs in the fridge door. The door opens very often. The temperature there changes a lot, and it will make eggs go bad faster.