问题标题：
Ourteachertoldusthat_______moonmovesaround______earth,and____earthcircles____sun.A.a,a,a,aB.an,an,an,anC.the,the,the,theD./,/,/,/选哪个
问题描述：
Ourteachertoldusthat_______moonmovesaround______earth,and____earthcircles____sun.
A.a,a,a,aB.an,an,an,an
C.the,the,the,theD./,/,/,/
选哪个
胡清河回答：
earth,moon,sun.都只有一个,故都是特指,选C.
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