Upstairs quality IQ is worrying? I just don't understand this knowledge? Can you guarantee that you know everything? Each has its own shortcomings.
Some people don't know this tool themselves, so comment below. Some people think they know a little about computers. Then other people in the world who don't know computers are worried about their IQ. After saying a word, he will swear with private letters, huh? It is true that his IQ is worrying.