结石是指

A．体内水液代谢障碍所形成的病理产物

B．不能循经运行溢于脉外或阻滞于血脉及脏腑内的一种病理产物

C．体内某些部位形成并停滞为病的砂石样病理产物或结块

D．一种具有强烈传染性的外邪

E．机械暴力等外邪所致损伤

My brother studies in _____ university. _____ university is very far from here. [ ]

A. an, The

B. a, The

C. the, A

D. a, A