Why is the sea salty?

點閱:2

作者:by Fire Ball Crew

出版年:2014

出版社:Ace Mind Pte Ltd

出版地:Singapore

集叢名:Happy dragon 100,000 whys series.

格式:PDF

ISBN:9789810923587


Why is the sea salty?
How does a fly walk upside-down on ceilings without falling off?
Why do people create flatulence?
Why...

  • Introduction to Characters(p.4)