— Is her sister a teacher or a student?

— _____________.[ ]

A. No, she's a teacher.

B. No, she isn't a teacher.

C. She's a student.

D. Yes, she's a teacher.

哪项不是肠结核的论断依据（）。

A.粘膜皱壁破坏

B.肠管狭窄短缩

C.肠管充气扩张

D.肠管激惹征象

E.多发性息肉样充盈缺损