A Christmas tree is sign that can only be understood as far as certain cultural understanding is concerned.
A. the, /
B. a, the
C. a, a
D. the, a
网友回答
A. the, /
B. a, the
(答案→)C. a, a
D. the, a
解析：
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。