This is perhaps one of important reasons why so many people write poetry.A. a ; theB. th

问题补充：

This is perhaps one of important reasons why so many people write poetry.

A. a ; the

B. the ; the

C. the; 不填

D. a; 不填

答案：

A. a ; the

B. the ; the

(答案→)C. the; 不填

D. a; 不填

解析：考查冠词：第一空填the，特指“重要的原因”，第二空是不填poetry.是泛指“诗歌”，句意：这可能就是这么多人写诗的重要原因之一。选C.