谁能帮我解决一下这个问题.关于月球的,用中文回答,物理复习提纲的最后一题：ThemoonisasatelliteoftheEarth,ItorbitstheEarthonceeverytwenty-eightdays.(a)TheMoonappearsasafullmoonfromtheEarth.Explainw

Question

谁能帮我解决一下这个问题.关于月球的,用中文回答,
物理复习提纲的最后一题：
The moon is a satellite of the Earth,It orbits the Earth once every twenty-eight days.
(a)The Moon appears as a full moon from the Earth.Explain why.
(b)Describe how the Moon would appear from the Earth seven days later.
(c)The same side of the Moon always faces the Earth.State and explain how long a "day"is on the moon.
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Answer 1

(a)月亮正好在太阳和地球的中间是所以看起来是满月
(b)看起来像个镰刀
(c)月球上的一天是地球上的一个月