下列哪一项不是急性肾静脉血栓形成的典型临床表现（）

A.患侧腰胁痛或腹痛

B.血尿和蛋白尿

C.肾功能异常

D.病肾增大

E.肾性糖尿

Is there anyone in your class who________ the car accident that happened in front of our school this

morning?[ ]

A. witnessed  

B. observed

C. introduced  

D. predicted