---Hello, may I speak to Jane?      ---_________

A. Who are you?                B. What’s wrong?

C. This is Jane speaking.          C. She is Jane.

腹部平片检查，对哪种“急腹症”诊断价值不高（）

A.输尿管结石

B.小肠低位机械性肠梗阻

C.消化道穿孔

D.急性阑尾炎

E.肾结石