单项选择题

女性，60岁。长期便秘，近一年来，排便时有肿物自肛门脱出。经检查后确诊为内痔。下列哪项措施对其预防便秘无效

A.多饮水、多吃蔬菜
B.忌酒和辛辣食物
C.养成每天定时排便习惯
D.坚持每晚肛门坐浴
E.每天坚持适当活动
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What is claimed about cross-cut shredders?A.They are considered more securE.B.They can cut more pages at one timE.C.They do not jam as much as strip-cut shredders.D.They are available only for medium or heavy usE.
A.They
B.
B.They
C.
C.They
D.
D.They
单项选择题
某消化性溃疡病人，原有疼痛节律消失，变为持续上腹痛，伴频繁呕吐，呕吐物含发酵性宿食。最可能的并发症为
A.急性胰腺炎
B.穿孔
C.胃癌
D.上消化道出血
E.幽门梗阻
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