The teacher told us yesterday that the light _____ faster than the sound.[ ]

A. travels        

B. travelled    

C. has travelled  

D. will travel

经上述检查，诊断最可能是

A．急性肾炎

B．腰痛血尿综合征

C．肾结石

D．左肾静脉受压综合征

E．慢性肾炎