Warming up 1. How many planets are there in the solar system? Mercury （水星）, Venus （金星）, Earth, Mars （火星）, Jupiter （木星, Saturn （土星）, Uranus （天王星）,
LOGO Learning about Language.
Astronomy: the science of the stars. 1.Water had also appeared on other planets like Mars. 2.Unlike the earth, it had disappeared later. 3.Next, green.
