疥疮患者外生殖器最常见的皮损是()
A.丘疹
B.丘疱疹
C.水疱
D.隧道
E.结节
参考答案:E
As middle school students, we _____ the police to keep order.
A.are used to help
B.used to helping
C.used to help
D.used to be helped
男性,31岁,排便不适、下坠感1个月。偶有腹泻和便血,无腹痛,有癌症家族史。(1) 若怀疑直肠癌,有效的检查措施,首先选择 ( )
A.大便隐血试验B.直肠指检C.直肠镜D.钡灌肠E.CEA