单选题
Full moons occur when ______.
A、
the moon is between the sun and the Earth
B、
the Earth is between the moon and the sun
C、
the sun is between the Earth and the moon
D、
the side of the moon facing the Earth is dark
【正确答案】
B
【答案解析】
第四段告诉我们当地球处在月球和太阳之间时会出现满月。
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