单选题据世界卫生组织1995年的调查报告显示，70％的肺癌患者有吸烟史，其中有80％的人吸烟的历史多于10年。这说明吸烟会增加人们患肺癌的危险。以下哪项最能支持上述论断?

单选题政治家：每年，小企业比大型老牌公司要创造更多的就业机会。因此，为减少长期的失业率，我们应当鼓励推动兴办中小企业而不是扩大老牌的大公司。下列哪项，假如是正确的，将对政治家的论点提出最大质疑？

单选题在某大型理发店，所有的理发师都是北方人，所有的女员工都是南方人，所有的已婚者都是女员工，所以，所有的已婚者都不是理发师。下面哪一项为真，将证明上述推理的前提至少有一个是假的?

单选题未来深海电缆的外皮是由玻璃制成的，而不是特殊的钢材或铝合金。原因是金属具有颗粒状的微观结构，在深海压力之下，粒子交结处的金属外皮易于断裂。玻璃外皮就不会有这种情况，因为玻璃看起来是固体，由于它在压力之下可以流动，所以可将之视为液体。以下哪项最有可能从上述议论中推出?

单选题一种在儿童中非常流行的病毒感染导致30%被感染的儿童患了中耳炎，对细菌感染非常有效的抗生素对这种病毒却无能为力。然而，当因病毒感染而患中耳炎的儿童接受抗生素治疗后，中耳炎却得到了治愈。 以下哪一项最好地解释了上文中明显的不一致?

单选题市妇联对本市8100名9～12岁的少年儿童进行了问卷调查，统计显示：75%的孩子“愿意写家庭作业”，只有12%的孩子认为“写作业挤占了玩的时间”。对于这些“乖孩子”的答卷，一位家长的看法是：要么孩子们没有说实话，要么他们爱玩的天性已经被扭曲了。 以下哪项陈述是这位家长的推论所依赖的假设?

单选题使用枪支的犯罪比其他类型的犯罪更容易导致命案。但是，大多数使用枪支的犯罪并没有导致命案。因此，没有必要在刑法中把非法使用的枪支作为一种严重刑事犯罪，同其他刑事犯罪区分开来。 上述论证中的逻辑漏洞，与以下哪项中出现的最为类似?

单选题血液中的高浓度脂肪蛋白质含量的增加，会使人体阻止吸收过多胆固醇的能力增加，从而降低血液中的胆固醇。有些人通过规律的体育锻炼和减肥，能明显地增加血液中高浓度脂肪蛋白的含量。 根据上述论述，可以推出的最恰当的结论是：

单选题只有糖化血红蛋白指标控制在6以下，尿中的微量白蛋白才能控制在20mg/L～200mg/L范围内。 以下各项都符合题干的条件，除了?

单选题一般人总会这样认为，既然人工智能这门新兴学科是以模拟人的思维为目标的，那么就应该深入地研究人思维的生理机制和心理机制。其实，这种看法很可能误导这门新兴学科。如果说，飞机发明的最早灵感是来自于鸟的飞行原理的话，那么，现代飞机从发明、设计、制造到不断改进，没有哪一项是基于对鸟的研究之上的。上述议论，最可能把人工智能的研究比作以下哪项?

单选题在丈夫或妻子至少有一个是中国人的夫妻中，中国女性比中国男性多2万。如果上述断定为真，则以下哪项一定为真？Ⅰ．恰有2万中国女性嫁给了外国人。Ⅱ．在和中国人结婚的外国人中，男性多于女性。Ⅲ．在和中国人结婚的人中，男性多于女性。

单选题太阳风中的一部分带电粒子可以到达M星表面，将足够的能力传递给M星表面粒子，使后者脱离M星表面，逃逸到M星大气中。为了判定这些逃逸的粒子，科学家们通过三个实验获得了如下信息： 实验一：或者是x粒子，或者是y粒子。 实验二：或者不是y粒子，或者不是z粒子。 实验三：如果不是z粒子，就不是y粒子。 根据以上三个实验，以下哪项一定为真?

单选题户籍改革的要点是放宽对外来人口的限制。G市在对待户籍改革上面临两难：一方面，市政府懂得吸引外来人口对城市化进程的意义；另一方面又担心人口激增的压力。在决策班子里形成了“开放”和“保守”两派意见。 以下各项如果为真，都只能支持上述某一派的意见，除了： A．城市与农村户口分离的户籍制度，不适应目前社会主义市场经济的需要。 B．G市存在严重的交通堵塞、环境污染等问题，其城市人口的合理容量有限。 C．G市近几年的犯罪案件增加，案犯中来自农村的打工人员比例增高。 D．近年来，G市的许多工程的建设者多数是来自农村的农民工，其子女的就学成为市教育部门面临的难题。 E．由于计划生育政策和生育观的转变，近年来G市的幼儿园、小学乃至中学的班级数量递减。

单选题S城的人非常喜欢喝酒，经常出现的酗酒闹事影响了S市的治安环境。为了改善城市的治安环境，市政府决定：减少S城烈酒生产量。 以下哪项如果为真，对市政府的决定提出了最严重的质疑?( )

单选题壳牌石油公司连续3年在全球500家最大公司净利润总额排名中位列第一，其主要原因是该公司比其他公司有更多的国际业务。 下列哪项如果为真，则最能支持上述说法?( )

单选题Manners nowadays in metropolitan cities like London are practically non-existent. It is nothing for a big, strong schoolboy to elbow an elderly woman aside in the dash for the last remaining seat on the tube or bus, much less stand up and offer his seat to her, as he ought. In fact, it is saddening to note that if a man does offer his seat to an older woman, it is nearly always a Continental man or one from the older generation. This question of giving up seats in public transport is much argued about by young men, who say that, since women have claimed equality, they no longer deserve to be treated with courtesy, and that those who go out to work should take their turn in the rat race like anyone else. Women have never claimed to be physically as strong as men. Even if it is not agreed, however, that young men should stand up for younger women, the fact remains that courtesy should be shown to the old, the sick and the burdened. Conditions in travel are really very hard on everyone, we know, but hardship is surely no excuse. Sometimes one wonders what would have been the behavior of these stout young men in a packed refugee train or a train on its way to a prisoner-camp during the war. Would they have considered it only right and their proper due to keep the best places for themselves then? Older people, tired and irritable from a day's work, are not angels, either--far from it. Many a brisk argument or an insulting quarrel breaks out as the weary queues push and shove each other to get on buses and tubes. One cannot commend this, of course, but one does feel there is just a little more excuse. If cities are to remain pleasant places to live in at all, however, it seems urgent, not only that communications in transport should be improved, but also that communication between human beings should be kept smooth and polite. All over cities, it seems that people are too tired and too rushed to be polite. Shop assistants won't bother to assist, taxi drivers shout at each other as they dash dangerously round corners, bus conductors pull the bell before their desperate passengers have had time to get on or off the bus, and so on and so on. It seems to us that it is up to the young and strong to do their small part to stop such deterioration.

单选题与太阳紫外线照射相关的皮肤癌病例每年都保持相对稳定的数量，即使与20年前盛行晒太阳时相比，现在特意将自己暴晒于太阳下的成年人要少得多。以下各项如果为真都可解释上述统计数字上的差异，除了：

单选题For me, scientific knowledge is divided into mathematical sciences, natural sciences or sciences dealing with the natural world (physical and biological sciences), and sciences dealing with mankind (psychology, sociology, all the sciences of cultural achievements, every kind of historical knowledge). Apart from these sciences is philosophy, about which we will talk later. In the first place, all this is pure of theoretical knowledge, sought only for the purpose of understanding, in order to fulfil the need to understand what is intrinsic and consubstantial to man. What distinguishes man from animal is that he knows and needs to know. If man did not know that the world existed, and that the world was of a certain kind, that he was in the world and that he himself was of a certain kind, he wouldn't be man. The technical aspects or applications of knowledge are equally necessary for man and are of the greatest importance because they also contribute to defining him as man and permit him to pursue a life increasingly more truly human. But even while enjoying the results of technical progress, he must defend the primacy and autonomy of pure knowledge. Knowledge sought directly for its practical applications will have immediate and foreseeable success, but not the kind of important result whose revolutionary scope is in large part unforeseen, except by the imagination of the Utopians. Let me recall a well-known example. If the Greek mathematicians had not applied themselves to the investigation of conic sections, zealously and without the least suspicion that it might someday be useful, it would not have been possible centuries later to navigate far from shore. The first man to study nature of electricity could not imagine that' their experiments, carried on because of mere intellectual curiosity, would eventually lead to modern electrical technology, without which we can scarcely conceive of contemporary life. Pure knowledge is valuable for its own sake, because the human spirit cannot resign itself to ignorance. But, in addition, it is the foundation for practical results that would not have been reached if this knowledge had not been sought disinterestedly.

单选题在一场魔术表演中，魔术师随意邀请一位观众志愿者，上台配合他的表演。根据魔术师的要求，志愿者从魔术师手中的一副扑克中随意抽出一张。志愿者看清楚了这张牌，但显然没有让魔术师看到这张牌。随后，志愿者把这张牌插回那副扑克中。魔术师把扑克洗了几遍，又切了一遍。最后魔术师从中取出一张，志愿者确认，这就是他抽出的那一张。有好奇者重复三次看了这个节目，想揭穿其中的奥秘。第一次，他用快速摄像机记录下了魔术师的手法，没有发现漏洞；第二次，他用自己的扑克代替魔术师的扑克；第三次，他自己充当志愿者。这三次表演，魔术师无一失手。此好奇者因此推断：该魔术的奥秘，不在手法技巧，也不在扑克或者志愿者有诈。 以下哪项最为确切地指出了好奇者的推理中的漏洞?( )

单选题中世纪的阿拉伯人有许多古希腊原文的手稿，当需要的时候，人们就把它译成阿拉伯语。中世纪的阿拉伯哲学家对亚里士多德的《诗论》非常感兴趣，这种兴趣很明显并不被中世纪的阿拉伯诗人所分享，因为一个对《诗论》感兴趣的诗人一定会想读荷马的史诗，亚里士多德就经常引用荷马的诗句。但是荷马的诗一直到现在才被译成阿拉伯语。 以下哪项如果为真，能最强有力地支持上述论证?