The city of Yiwu is unique attraction to tourists and businessmen at home and abroad as there are various kinds of specialized markets in it.
A. an; /
B. the; the
C. a; /
D. /; the
网友回答
A. an; /
B. the; the
(答案→)C. a; /
D. /; the
解析：考查冠词的用法。a unique attraction泛指一个独特的景点，at home and abroad固定短语：在国内外，所以选C。