Question

A Christmas tree is ______ sign that can only be understood as far as ______ certain cultural understanding is concerned

1. A.
   the, /
2. B.
   a, the
3. C.
   a, a
4. D.
   the, a

Answer 1

C
试题分析:考查冠词用法。根据句中a Christmas tree 判断sign在此应该是泛指概念 “一个”，a certain 后面跟单数名词表示“某种”。句意：圣诞树是一种标志，这种标志只有具备某种文化理解力才可以懂得。所以C为正确答案。
考点：考查冠词用法。