It is said that Beijing University was the first

问题描述:

It is said that Beijing University was the first
institute of higher learning_____ in China.
A.established B.being established
C.to be established D .having been established

选A,被动语态做定语,仅表示被动的不包含时态.B项:正在进行时,显然不对.C项:不定式表示将来的动作.D项:如果想表达完成时的话,由said说明应该用过去完成时,所以应该是用定语从句that had been ...比较合适.综上,选A.