2008年1月中下旬，我国南方地区发生了长时间、大范围的低温、大雪、冻雨等气象灾害。读图回答题。

据上图提供信息分析，形成这次持续雨雪天气的水汽主要来自

    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?