题目

Life is full of challenges. School has to be the most challenging difficulty in the lives of youth today. Elementary school brings about a few challenges characteristic of those years spent there. There’s the challenge of coloring in lines, a very real problem to any youngster. Or how about the challenge of remembering to raise one’s hand before one speaks? There are hundreds of rules and regulations that govern these children. The one thing that keeps these children in line is the hope of reward. Yes, this is the brass ring. The reward for a clean desk is an extra five minutes of rest! Th13．在一次函数y=2x-3中，y随x的增大而增大（填“增大”或“减小”）．