Social practice is opportunity for students to gain better understanding of how society operates.
A. the; the
B. the; a
C. an; a
D. an; the
网友回答
A. the; the
B. the; a
(答案→)C. an; a
D. an; the
解析：句意：社会实践是学生更好的理解社会是怎么运作的机会。第一空填an，泛指“一个机会”，第二空填a，gain a better understanding of是固定词组“更好的理解”，所以选C。