Views:75 Author:Site Editor Publish Time: 2018-08-27 Origin:Site
Green is a vibrant color, also it is pure and lovely. Our earth is an energetic planet, it has green grassland, white snow mountains, beautiful flowers.But the most important thing is earth provides fresh air to human beings and nature for survival. If one day she is ill, through this science toy，you can learn how can you to be a little doctor and how will you save her. Let’s act together!