英文

题目

英文
Draw a diagram showing the Sun and the orbits of Venus,Earth and Mars.
a.Use your model to explain why Venus is visible only in the morning or evening sky,but Mars can also be seen at midnight.
b.Venus goes through phases,like the moon.On your diagram,show where Venus would be when is was'full'

答案

翻译部分：画出太阳以及金星、地球和火星的运行图,然后：a,用你画的图解释为什么金星只能在黎明和黄昏时看到,而火星却可以在半夜也能看到；b,金星象月球一样有盈亏的相位变化,用你的图说出金星在什么位置可以看到“...