Series / 所属系列: |
| Let's-Read-and-Find-Out Science
|
Overview / 简介: |
What goes up must come down.
Everybody knows that. But what is it that pulls everything from rocks to rockets toward the center of the earth? It's gravity. Nobody can say exactly what it is, but gravity is there, pulling on everything, all the time. With the help of an adventurous scientist and his fun-loving dog, you can read and find out about this mysterious force.
|
 |
报告错误、缺书登记 |
如果您发现关于本书的任何错误，请点这里报告。
如果您在本站没有发现您想要的书，想要团购这本书，或者有其他方面的意见、建议，请点这里留言，
我们将认真考虑您的要求。
|
| 上传内页照片或者 mp3 音频 |
如果您有本书内页的图片，或者有语音的 mp3, 安妮非常感谢您登录后上传，与全体会员分享！
|
京公网安备11010802030648号