The popular notion that older people need less sleep than younger adults is a myth, scientists said yesterday. While elderly people __1__ to sleep for fewer hours than they did when they were younger, this has a(n) __2__ effect on their brain's performance and they would benefit from getting more, according to research.Sean Drummond, a. psychiatrist (心理医生) at the University of California, San Diego, said older people are more likely to suffer from broken sleep, while younger people are better at sleeping __3__ straight through the night.More sleep in old age, however, is __4__ with better health, and most older people would feel better and more __5 _ if they slept for longer periods, he said.“The ability to sleep in one chunk(整块时间) overnight goes down as we age but the amount of sleep we need to __6__ well does not change,” Dr Drummond told the American Association for the Advancement of Science conference in San Diego.“It's __7__ a myth that older people need less sleep. The more healthy an older adult is, the more they sleep like they did when they were __8__. Our data suggests that older adults would benefit from __9__ to get as much sleep as they did in their 30s. That's __10__ from person to person, but the amount of sleep we had at 35 is probably the same amount as we need at 75.”A)alertB)associatedC)attractingD)clingE)continuingF)definitely G)differentH)efficientlyI)formally J)functionK)mixed L)negativeM)sufficientN)tend O)younger S

生物碱类抗肿瘤药物是( )

A. 长春新碱
B. 羟基脲
C. 放线菌素D
D. 阿糖胞苷
E. 塞替派

血清钠浓度高于( )时诊断为高渗性脱水( )

A. 135mmol/L
B. 140mmol/L
C. 145mmol/L
D. 150mmol/L
E. 160mmol/L

手术器械常用消毒方法( )

A. 煮沸灭菌
B. 高压蒸汽灭菌
C. 0.1%新洁尔灭液浸泡
D. 40%甲醛熏蒸
E. 70%酒精消毒

胆道镜消毒方法( )

A. 煮沸灭菌
B. 高压蒸汽灭菌
C. 0.1%新洁尔灭液浸泡
D. 40%甲醛熏蒸
E. 70%酒精消毒

关于无菌术的概念,下列错误的是( )

A. 无菌术是临床医学的一个基本操作规范
B. 无菌术就是针对微生物及感染途径所采取的一系列预防措施
C. 无菌术的内容包括灭菌、消毒法、操作规则及管理制度
D. 消毒是指杀灭一切活的微生物
E. 灭菌和消毒都必须能杀死所有病原微生物和其他有害微生物

关于蛛网膜下腔阻滞的说法,错误的是( )

A. 穿刺部位在脊髓终止以下部位
B. 小儿脊髓终止位置较低,新生儿在L3下缘
C. L3~L4穿刺可避免损伤脊髓和马尾
D. 成人脊髓终止在L1椎体下缘或L2椎体上缘
E. 成人穿刺位置可在L2~L3以下

高血钾的治疗措施不正确的是( )

A. 输入钙剂
B. 停止钾盐输入
C. 阳离子交换树脂
D. 透析疗法
E. 输入镁制剂