Since to the world the dance “GangnamStyle” has caused a release of a certain feeling.A.

问题补充：

Since to the world, the dance “GangnamStyle” has caused a release of a certain feeling.

A. introduced

B. introducing

C. being introduced

D. to be introduced

答案：

(答案→)A. introduced

B. introducing

C. being introduced

D. to be introduced

解析：考查状语从句的省略。当状语从句的主语与主句的主语一致的时候，且含有be动词的时候，可以把状语从句的主语和be动词一起省略。本题在since后面省略了the dance is；句意：自从“GangnamStyle”被介绍给全世界，这个舞蹈已经导致了一种情感的释放。故A正确。