Great changes have taken place in China since the People’s Republic of Chinain 1949A. was

问题补充：

Great changes have taken place in China since the People’s Republic of China

in 1949．

A. was found

B. founded

C. was founded

D. found

答案：

A. was found

B. founded

(答案→)C. was founded

D. found

解析：考查动词时态及语态。found成立；根据文中的时间状语in 1949可知应用用一般过去式，句意：自从在1949年中华人民共和国成立以来中国发生了巨大变化。根据语境中华人民共和国是被建立的，所以应用被动语态，故选C。