Yangzhou high school since 1902.
A. has e into existence
B. has been existed
C. has been in existence
D. began to exist
网友回答
A. has e into existence
B. has been existed
(答案→)C. has been in existence
D. began to exist
解析：句意：扬州中学自从1902年就成立了。和since连用用现在完成时，排除D，e into existence和exist是短暂动作，不能和一段时间连用，排除AB，be in existence存在，是表示状态，可以和一段时间连用，选C。