Look at the blue Earth. This is our home. There are plains (平原), mountains, rivers, lakes and oceans (海洋) in our home. There are many kinds of trees, flowers, sand and grass in our home. There are many kinds of wild (野生)animals living together with us. But sometimes we do so many bad things to it. We waste too much water. We cut down too many trees. We hunt (捕猎) for too many wild animals for food or clothes. We waste too much energy (能源). Too many cars use a lot of energy. We use too many plastic bags. We shouldn’t do these things. We should save our Earth, because we have only one Earth.
1．There are no trees and grass on the Earth.Welcome to “The World of Robots”! | |
| Time: 10 a.m.—5 p.m. Things we saw: many kinds of robots ·a robot at the piano ·a robot dancer ·a robot football player |  |
A visit to the Science Museum
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