第5题: [单项选择]人工肛门自我护理方法正确的是() A. 禁忌扩张造口 B. 定时结肠灌洗,训练排便习惯 C. 造口袋内排泄物超过3/4时应更换造口袋 D. 肛门袋宜长期持续使用,减少更换 E. 根据患者体形、体重选择造口袋大小 参考答案:B 答案解析:对于有人工肛门的患者,应教会患者自我护理方法,应指导患者每1~2周扩张造口1次,防止人工肛门狭窄,故A错误;造口袋内排泄物超过1/3时应予以更换,而非3/4时再更换,故C不对;人工肛门袋不宜长期持续使
第8题: [单项选择]By the time he arrives in Beijing,we ______ here for two days. A. will have stayed B. have been staying C. shall stay D. have stayed 参考答案:A 答案解析:词组by the time意为“在…之前”,它引导的句子用现在时表示将来时间,故主句需用将来时。再由stay这个动作一直持续着,故用完成时。结合以上两点,故选A。句意:在他到达北京之前,我们将在这儿住
A. Nature has changed our environment. B. We have wasted resources and polluted our environment. C. Our resources are nearly used up. D. We have cooperated with nature well. 参考答案:B