第209页

信息发布者：
Because it's dangerous to important satellites and astronauts .
At most 25years .
We should start solving the problem right away .
(更多请查看作业精灵详解)
（更多请点击查看作业精灵详解）






Countries should work together and reach an agreement to send fewer space tools into space .
       On Mars, we have no choice but to wear space helmets and special boots so that we can keep ourselves safe. Also, the food here is always in the form of pills. Of course, it isn't as 
tasty as food on the Earth.
       There are also some advantages. All of us can live in big houses. The cars here can float in the air. Luckily, we never worry about pollution because there is no pollution here at all. We don't need to go to school to have classes. We can finish our schoolwork through the special network.
       However, I still miss my life on the Earth. I hope scientists can deal with the problem of pollution so that I can go back soon.
上一页 下一页