反比例函数$y_1=\frac{m}{x}$（x＞0）的图象与一次函数y₂=﹣x+b的图象交于A，B两点，其中A（1，2），当y₂＞y₁时，x的取值范围是（　　）

1939年8月31日，希特勒签署了关于实施“白色方案”的命令。其中写道：“进攻日期：1939年9月1日。”签署该命令是为了（   ）

C

    "Tom? Are you in bed yet?" called Mrs. White. There was no answer. Mrs. White put down her book and went to her 14-year-old son's room. Tom was sitting in front of a bright computer screen on which a motorbike was running fast.

    "Oh, Tom. You're still playing on that computer game. You must stop now, because it's half past eleven. If you don't go to bed soon, you'll be very tired tomorrow." Said Mrs. White.

    "But I've nearly won the game." Tom said to Mrs. White. She could see the excitement on his face. She sat beside him.

    "You're always playing on the computer. You spend more time on this machine than on your homework."  

    Today more and more families have computers. Parents hope computers can help their children improve their study at school. But many of their children use computers to play games, listen to songs and watch videos instead of studying. We often see that computer net bars are crowded with people, especially young boys. They spend a lot of money competing with the computerized machines. The more they lose, the more they want to win. The result is that they don't want to work or study.

    In some countries, even scientists hate computers. They say computers cause millions of people to lose their jobs or cause them a lot of trouble. Computer game addiction(瘾) is a serious problem in social life. Something should have to be done to solve the problem.