So involved with their computers that leaders at summer computer camps often have to force them to break for sports and games. A．the children become B．become the children
Once an Arab was traveling in the desert . When the sun went down in the west , he stopped and put up his tent , made a fire and had a 36 meal . When night fell , he 37 down to sleep . He
∥b,直线c与a,b相交，∠1=70°，则∠2= 度；
