完形填空
Nowadays we can see more and more electric bikes in the street. Electric bikes are easy to1. They run fast and make no pollution. So they become very2in many big cities in China.But the electric bikes also cause more traffic accidents. So China plans to make a new rule3the electric bike riders. If an electric bike is heavier than 40 kilos and can go faster than 20 kilometers an hour, its rider must get a license(许可证). It means riders have to pass driving tests4they ride their electric bikes on the road.
People have different ideas about the plan. Some welcome the plan because they think it will make the street much safer. But some are not happy with the new rules at all. One rider said, “I don't want to get a license or anything. That's too much5.” What's your idea?
均为大于0的实数，设命题P：以
为长度的线段可以构成三角形的三边，
，则P是Q的 （ ）
