“How about John?”“My uncle ______a good student．”         

A．believes John

B．considers John

C．suggests John

D．knows John

病史：男性，49岁，腹痛1天，进行性加重。诊断（）

A.肠梗阻

B.消化道穿孔

C.正常腹平片

D.肠结核

E.以上均否