我今年7岁了,有一天,我突然发现我的门牙有一点松动,我吓坏了,心想,我没摔跤,牙齿怎么会松动呢?我告诉妈妈,妈妈笑着说:“每个小朋友到7岁左右都要换牙,原来的牙齿掉下来,会长出新的牙来。”我听后放心多了,可是这颗门牙好像专门和我作对,松动了好久它也不肯掉下来,害得我吃苹 I am seven years old this year, one day, I suddenly found my toe a little loose, I was terrified, I thought, I did not wrestle, how could the teeth loose? I told my mom, my mother smiled and said: “Each child To be around 7 years old to change teeth, the original teeth fall, the president will be a new tooth to come. ”I hear more assured, but this door teeth seems to be against me, loosen it for a long time it will not fall, I have to eat Apple harm