单选题A．500mlB．3000～4000mlC．1000mlD．120mlE．300ml

单选题老年患者，急性腹痛12小时入院。体检可见肠型，左中下腹饱满，轻度压痛，听诊肠鸣音12次/分，响亮高亢，无金属调音。提示该患者

单选题下列贫血何者为小细胞均一性贫血

单选题膀胱癌时尿中可出现大量

单选题外周血血小板计数增多见于

单选题A．耳后乳突淋巴结 B．左锁骨上淋巴结C．胸锁乳突肌下部 D．右锁骨上淋巴结E．颈深淋巴结下群

单选题检查脊柱压痛点时，让患者取

单选题中央型肺癌(发生于段以上支气管)最适宜的检查方式为

单选题胸部皮下气肿时

单选题School authorities often refuse to face the problem of drug-abuse; government drug-abuse agencies have done too little to inform the public about it; many physicians still seem unaware of it when they examine teenagers. As a result, parents may still be the last to know that their children have fallen victim to the drug epidemic that has been raging for more than a decade among American's youth. In a survey of a middle-income Cincinnati suburb, 38 percent of the sixth grade and 89 percent of the senior class said they used drug and alcohol; 48 percent of the parents thought their children used alcohol, but only 8 percent thought their children used drug. Fortunately, there is a new force at work against this epidemic—a nationwide movement of more than 400 parent groups formed to expose and battle drug use among teenagers and preteens. The groups have different approaches and widely varying rates of success. Yet this parental crusade is the only major force in the country to have taken active, organized and effective steps aimed at stopping marijuana use. Why the concentration on marijuana? Marijuana is the illegal drug most used by kids. According to a National High School Survey, 44 percent of U. S. high school seniors had smoked pot during their school years, and one out of seven of these were daily or near daily smokers. There was a close-related connection between pot smoking and subsequent use of cocaine and heroin by young men. Of those who had smoked pot fewer than 100 times, seven percent had graduated to cocaine, four percent to heroin. But of those who had smoked pot at least 1,000 times, 73 percent had gone on to cocaine, and one out of three had graduated to heroin. Parent groups have found that by stopping their kids from smoking pot, they almost automatically stop all other illegal drugs, and cut down on alcohol use as well. The High School Senior Survey's statistics show that heavy pot smokers tend to be heavy drinkers, while those who do not use pot tend not to drink heavily. Since virtually all over the country teenage " partying " has come to mean " getting smashed and getting stoned " on anything from pot to pills to hashish, LSD, and alcohol, some parent groups home in on the partying aspect. Parents Who Care (PWC) was started in 1979 by 15 Palo Alto, Calif., parents who were upset by stories of serious drug problems at parties. They held talk sessions with their children and learned that most of their children had never been to a party where the main activity was not getting high. The parents' solution: workshops showing kids how to give successful drug-and-alcohol-free parties. Says Margery Ranch, PWC director, " We've seen a change in attitude. Young people are feeling more comfortable saying no. /

单选题下列参与第二心音的形成，下列哪项是错误的

单选题眼球向下及向外运动减弱提示有损害的神经是

单选题胸片有空洞的咯血不见于下述何种疾病

单选题下列检查结果中不符合代谢性碱中毒的是

单选题正常膈肌移动范围为

单选题肝豆状核变性常表现为

单选题不属于中毒性呼吸困难的是

单选题A．肠系膜静脉阻塞B．门脉高压C．上腔静脉阻塞D．下腔静脉阻塞

单选题呕血伴黄疸见于

单选题患者，男，55岁。心电图表现为：窦型心律，PR间期0．10s，QRS波群起始部顿挫，QRS波群时限0．14s。最可能的诊断为