克雷伯杆菌肺炎首选 A．庆大霉素 B．青霉素 C．红霉素 D．氧氟沙星 发布时间：2017-05-04 14:30 │ 来源：www.tikuol.com 题型：单项选择题 问题： 克雷伯杆菌肺炎首选A．庆大霉素 B．青霉素 C．红霉素 D．氧氟沙星 E．甲硝唑
题型：单项选择题 一人看到闪电12.3s后又听到雷声．已知空气中的声速约为330m/s～340m/s，光速为3×108m/s，于是他用12.3除以3很快估算出闪电发生位置到他的距离为4.1km．根据你所学的物理知识可以判断：（ ）A．这种估算方法是错误的，不可采用B．这种估算方法可以比较准确地估算出闪电发生位置与观察考间的距离C．尽管这种估算方法没有考虑光的传播时间，结果误差不很大D．即使声速增大2倍以上，本题的估算结果依然正确 查看答案
题型：单项选择题 当事人对下列哪项行为不服，可提起行政复议( )A．胡某因旷工被工厂开除，胡某不服，提请市劳动仲载委员会仲裁。市劳动仲裁委员会对此作出的裁决B．张村和李村因一块滩涂的所有权问题发生争议，县人民政府对此进行的裁决C．孙某为市政府办公厅的一名副处长，由于平时不注意形象，在一次民意测验中，办公厅有80%的干部认为孙某不合格，据此，办公厅决定孙某改任助理调研员D．徐某为物价局干部，有人举报其有受贿行为，虽然徐某辩称这是有人陷害，事实也证明徐某并未受贿，但物价局还是认为徐某群众关系不好，影响了单位形象，决定扣发年终奖金300元 查看答案
题型：单项选择题 Western juries have traditionally found eyewitness testimony to be the most convincing evidence in criminal trials. Seeing is believing, as the saying goes. In numerous cases, when witnesses pointed to the defendant, his or her fate was sealed. But how reliable is eyewitness testimony Recent cases have suggested that despite our best intentions, we may unwittingly distort what we perceive. Artists and psychologists have long known that "seeing" is not a simple matter of recording visual input. People perceive the exterior world through a complex matrix of cultural expectations, personality traits, moods and life experiences. For example, researchers tested the cultural influence on perception by showing a set of optical illusions to various groups, and found that different groups responded in divergent ways. Accustomed to and inundated by perpendicular structures, Western Europeans succumbed easily to illusions based on rectangular lines. On the other hand, the Zulu people of South Africa, whose environment had been comprised almost entirely of circular forms (round houses, doors, etc.) did not fall prey to those linear illusions. Cultural expectations also influence the selectivity of our seeing. The amount of visual information that exists far exceeds our ability to process it, so we must filter that sensory input into recognizable images. In looking at a face, we do not see elongated ovals set in complex shadows and shading, we see eyes. And that filtering process is informed by what we perceive to be significant, which is influenced by cultural norms. Some cultures may emphasize differences in hair color or texture, others the shape of a nose or mouth, others the set of the eyes. But it is not only group expectations that color what we see, personality and mood fluctuation can also alter our perceptions. Orderly minds who shun ambiguity will see an off- center image as firmly fixed in the center. The same photograph of four young men allows for shifting interpretations based on our current feeling: a mood of happiness reveals boys enjoying a relaxing day, while anxiety changes the picture to students worrying about exams. In addition, numerous more prosaic factors affect our ability to record an image accurately. Duration of the encounter, proximity to the subject, lighting, and angle all affect our ability to see, and even stress may further undermine the accuracy of our perceptions. What will this mean for criminal trials Juries have often been reluctant to convict without eyewitness identification. Blood samples, fingerprints, and the like do not resonate as deeply with juries as does direct testimony, and frequently require understanding of complex scientific technicalities. But as confidence in eyewitness testimony wanes, such circumstantial evidence may someday replace visual identification as the lynchpin of criminal trials.The topic sentence of Paragraph 3 is ______ .A．at the beginning of this paragraphB．at the end of this paragraphC．in the middle of this paragraphD．Both A and B 查看答案