Much to our disappointment，the houses________to us were all destroyed in the big earthquake.[ ]

A. belong  

B. belonging  

C. belonged  

D. to belong

前列腺增生病人最早出现的症状是（）

A.排尿困难

B.尿潴留

C.尿频

D.无痛性血尿

E.腹股沟疝