三、李明看到高科技智能清扫机器人穿梭在街头与公园，为此他做了一些调查。阅读调查报告，完成下列句子。
Today, many smart cleaning robots work on the streets, in the parks and communities (社区). They are good helpers to protect our environment. These robots are of different kinds. Some clean wide roads, and others clean small paths. With 5G and smart cameras, they can find rubbish like plastic bottles and leaves. They can move around people and cars safely on their own.
These robots are very useful for our environment. First, they work fast and long. One robot can do the work of several cleaners. Second, they run (运行) on electricity, so they make no dirty air and little noise. This helps protect our city. Third, they can sort rubbish and save energy. Robots do hard and dangerous cleaning work. They work with cleaners instead of taking their jobs. This makes cleaning work easier and safer.
Now hundreds of smart robots are working. They use new technology to protect the environment. They make our city cleaner and quieter. They are our green helpers and bring us a better future.

1. One robot can do the work of several .
2. The robots run on .
3. Hundreds of robots help keep our city and quieter.

四、李明受“绿色小卫士行动”的启发，也想给地球制作一张环保海报。请结合环保主题，设计一张海报和文字宣传稿。