WHAT IS THE PASSAGE PRIMARILY ABOUT

64.What is the passage primarily about?A.the Moon's effect upon the Earth.B.a comparison of the Moon and the Earth.C.the origin of the Moon.D.what we know about the Moon and its differences to Earth.WRITINGPart I. Finish each of the following sentences in s uch a way that it means the same as the sentenceprinted before it.