以肛门部疼痛为主要表现的疾病有
A.血栓性外痔
B.肛瘘
C.直肠息肉
D.肛裂
E.肛门周围脓肿
参考答案:A,D,E
Female pandas usually have one or two babies ________.
A.at times
B.at once
C.at all times
D.at a time
下列传染病不属于丙类传染病的是
A.血吸虫病B.病毒性肝炎C.风疹D.肺结核E.麻风病