单选题男性，34岁，上腹灼痛3个月，柏油样便2日，为了确诊，首选检查是

单选题Researchers at the University of Arizona, led by Teresa Cummins, conducted an exploratory study on the online learning modules, designed to supplement hands-on classes taught by local experts and supported by an overview text, to help users increase their understanding of key concepts in the Arizona Master Watershed Steward program. They also sought to determine whether program participants would use the non-compulsory modules. Their evaluation revealed that module users increased their understanding of key watershed concepts; participants in the evaluation demonstrated a 30 percent increase in content knowledge following module use. Additionally, 70 percent of participants retained this knowledge through a two-month follow-up test. A follow-up survey showed that approximately half of the participants returned to the online modules on their own; several of these users returned several times and spent multiple hours per session. Comments from the follow-up survey suggested that the users accessed the site either as they had the time or as they needed the information. Online usage statistics indicated participants continued to visit the site for many months following the modules' release and advertisement. Though many visits were very brief (a single pageview; only a couple of seconds), visitors with many returns to the site and/or long visits appeared to be working through the modules. One participant stated, "My brain can only hold so much information; the modules keep information on-hand." Other participants commented that the modules were "more interesting and interactive" than the text material, and a "very effective tool" and "a great resource to the Master Watershed Steward community." The Arizona Master Watershed Steward program, sponsored by University of Arizona, prepares adults to serve as volunteers in the conservation of water resources and the protection, restoration, and monitoring of their watersheds. The modules were intended to reinforce concepts covered in classes and further engage participants in the learning process. One key finding was that the modules were not clearly preferred by users over in-person instruction. One participant stated, "For me, they are just another avenue for learning, a supplement or additional reference. I prefer in person and real hands-on learning." Other participants similarly expressed their desire for hands-on and face-to-face interaction. Several participants noted that the usefulness of in-person lectures—was a function of the presenter. Overall, the exploratory evaluation indicated that the modules were a welcome supplement to the course and were effective in reinforcing key concepts. Participants retained knowledge for several weeks, although since subjects were self-selected, they may have been self-motivated to pay attention and master the online module materials. "I am constantly searching for new ways to educate our program's diverse audiences and reinforce watershed science concepts, " says Candice Rupprecht, state coordinator for the Master Watershed Steward program. "I am excited to know that online learning modules can enhance our program by offering additional independent learning opportunities for our volunteers./

单选题下列对干性啰音的叙述，不正确的是

单选题男性，17岁，患ALL，经化疗后已完全缓解3个月，但最近发现右侧睾丸无痛性肿大，骨髓检查仍正常，诊断为睾丸白血病。针对该病的治疗措施是A．有侧睾丸放射治疗B．有侧睾丸手术切除C．双侧睾丸放射治疗D．双侧睾丸手术切除E．化学治疗

单选题A．肝细胞桥接坏死B．肝细胞结节状再生C．两者皆有D．两者皆无

单选题一例用短效胰岛素治疗的糖尿病患者，多次空腹血糖增高，尿糖阳性，白天尿糖全部阴性。

单选题A．垂体微腺瘤B．肾上腺皮质结节状增生C．小细胞性肺癌D．肾上腺皮质腺癌

单选题发作性吞咽困难三年，临床上应首先考虑的哪一种疾病

单选题患有幽门螺杆菌相关性胃炎的病人，给予哪种抗生素最为自( )(1995年)

单选题下列描述中，不符合继发性肺结核的是A．以内源性再感染为主B．以淋巴道和血道播散为主C．以气道播散为主D．多从肺尖开始E．新旧病变交杂

单选题下列哪种情况适合于用 131 I治疗

单选题Beyond question, Clinton was supposed to close up, stay out of sight, and avoid second- guessing his wife's boss. After his ego blustered into oncoming traffic during Hillary's heated primary race (1) Obama, the nation suffered from yet another turn of Clinton fatigue. (2) this week Bill Clinton showed an instinct for robust, inclusive leadership that the (3) White House occupant could make good use of right for the time being. With President Obama struggling to (4) the political damage from the Gulf oil spill, Clinton not only can't help himself—he's worth being listened. The conventional-wisdom (5) on President Obama's early reaction to the spill was (6) he didn't emote enough. He didn't feel the (7) of all those people in the crisis whose livelihood would be destroyed, whose clean waters and wildlife would be (8) in black gunk. Clinton considers this is an unfair (9) but offers a different—and more pointed— lesson to his young successor. "I think we ought to (10) in the same boat for a while... Let's just (11) the problem, and then we can hold everybody responsible and emote or not emote, " Clinton conversed (12) CNN Anchor Wolf Blitzer. Obama's first (13) after the oil spill was to "feel the blame" rather than "feel the pain, " which are pretty sarcastic words as it were. No one intends to let British Petroleum (BP) management (14) the hook—for dangerously cutting corners, and for a (15) safety record. However, the President's (16) focus on scolding BP consumed (17) White House energy while the oil gushed. Great leaders don't rush to criticise; Instead they instinctively (18) solutions. Rudy Giuliani, who didn't stop to blame (19) intelligence for letting it happen, stood out from New York mayor with a girlfriend problem to 9/11 hero when he took control of a crisis and instilled confidence that a ravaged city could (20) beyond a terrorist attack.

单选题某女，43岁，尿频、尿多、尿痛、腰痛伴发热，偶有寒战1天，T39．2℃，膀胱区压痛，双肾区痛尿常规：白细胞10～15爪／HP。诊断：急性肾盂肾炎。其尿中可见的管型为

单选题关于动脉粥样硬化症的描述，哪项是正确的( )(2000年)

单选题糖尿病性非酮症高渗性昏迷的诊断依据是

单选题A．精氨酸B．氯化钾C．左旋酸D．高渗糖

单选题男，25岁，心悸气促，反复咯血，坐势呼吸，心尖区有舒张期隆隆性杂音，肺动脉瓣第二心音亢进、肺底部有湿哕音此次就诊时大咯血，血压20／12kPa，治疗应选

单选题肺脓肿的临床特点，下列哪项不正确A．最常见的病原菌为金黄色葡萄球菌B．病原体自口及鼻吸入是发病的主要原因C．70%～90%的病例为急性起病D．并非所有的肺脓肿患者都能在肺部发现异常体征E．多数肺脓肿的感染对青霉素治疗敏感

单选题夜班护士发现一支气管扩张病人咳血约200ml后突然中断，呼吸极度困难，喉部有痰鸣音，表情恐怖，两手乱抓，首先要做的是（ ）

单选题感染性心内膜炎最常见的死亡原因是