加州科学分级 · 加州科学Time For Kids G1
该页暂无翻译
Mars by SUSAN L. ROGERS
Earth is a planet. Mars is a planet, too.
Mars is smaller than Earth. Mars is colder than Earth, too. Earth is closer to the Sun. Earth gets the Sun's heat.
Earth has a lot of water. Earth looks blue from space. Mars is dry and dusty. Mars looks red from space.
该页暂无翻译
