LD₅₀与ED₅₀的比值是(   )。

下列关于营养性缺铁性贫血的实验室检查叙述正确的是

新入职的赵老师利用课余时间，系统地学习教育学和心理学的相关知识，探索教育教学规 律，提高教育教学水平。这说明赵老师具有 ( ) 的意识。

学校教育形成于(      )。

下列病变中，属于真性肿瘤的是

我国的公路分为(   )个等级。

男，65岁。腹胀伴停止排便、排气6h，呕吐胃内容物。阑尾切除术后40年。查体：T37℃，心率85次/min，血压105/85mmHg，腹膨隆，右下腹轻压痛，无反跳痛，紧张。目前首要治疗(     )

Passage 1

Scientistshave found that although we are prone to snap overreactions, if we take amoment and think about how we are likely to react, we can reduce or eveneliminate the negative effects of our quick, hard-wired responses.

Snapdecisions can be important defense mechanisms; if we are judging whethersomeone is dangerous, our brains and bodies are hard-wired to react veryquickly, within milliseconds. But we need more time to assess other factors. Toaccurately tell whether someone is sociable, studies show, we need at least aminute, preferably five. It takes a while to judge complex aspects ofpersonality, like neuroticism or open-mindedness.

Butsnap decisions in reaction to rapid stimuli aren't exclusive to the interpersonalrealm. Psychologists at the University of Toronto found that viewing a fast-foodlogo for just a few milliseconds primes us to read 20 percent faster, eventhough reading has little to do with eating. We unconsciously associate fastfood with speed and impatience and carry those impulses into whatever elsewe're doing. Subjects exposed to fast-food flashes also tend to think a musicalpiece lasts too long.

  Yet we can reverse suchinfluences. If we know we will overreact to consumer products or housingoptions when we see a happy face  (onereason good sales representatives and real estate agents are always smiling),we can take a moment before buying. If we know female job screeners are morelikely to reject attractive female applicants, we can help screeners understandtheir biases-or hire outside screeners.

John  Gottman,the marriage expert, explains that we quickly "thin slice" information reliably only after we ground suchsnap reactions in  "thicksliced" long-term study. When Dr. Gottman really wants to assess whether a couple will stay together, he invitesthem to his island retreat for a much longer evaluation: two days, not twoseconds.

Our ability to mute our hard-wired reactionsby pausing is what differentiates us from animals dogs can think about thefuture only intermittently or for a few minutes. But historically we have spentabout 12 percent of our days contemplating the longer term. Although technologymight change the way we react, it hasn't changed our nature. We still have theimaginative capacity to rise above temptation and reverse the high-speed trend.

John Gottman says that reliable snap reactions are based on______.

患者，女，47岁。胃十二指肠溃疡，手术后第7天护士发现患者出现高热、寒战，右上腹疼痛，伴有呃逆。该护士首先考虑患者并发了（  ）

下列关于个人住房贷款合作项目准入调查的表述，错误的是（  ）。

下列形式为第二级预防的是