单选题某单位共有18名员工，因缺乏科学管理，人浮于事和分配不合理的现象十分严重，工资只分高、低两类。单位中不干事的比干事的人还多，干事者中工资低的人比不干事者中工资低的人还多。令人稍感欣慰的是：在不干事的人中，工资高的只占少数；另外，毕竟还有工资不低的干事者。最近，小张和小王离开了这个单位，但是该单位人员的上述结构并未因此而改变。据此，可以推断小张或小王原来在单位中不可能是：

单选题今天的美国人比1965年的美国人运动量减少了32%，预计到2030年运动量将减少46%；在中国，与1991年相比，人们的运动量减少了45%，预计到2030年将减少51%。缺乏运动已经成为一个全球性问题。 以下哪一项如果为真，最能支持上述观点?

单选题某单位在大年初一、初二、初三安排6个人值班，他们是G、H、K、L、P、S，每天需要2人值班，人员安排要满足以下条件： (1)L与P必须在同一天值班； (2)G与H不能在同一天值班； (3)如果K在初一值班，那么G在初二值班； (4)如果S在初三值班，那么H在初二值班。

单选题设函数f(x)在点x0处可导，且，则f"(x0)=______．A．B．C．D．

单选题宏观经济学（ ）

单选题若对某个消费者来说，牛肉与羊肉可以相互替代，则牛肉价格的上升将导致( )。

单选题智商很低的人肯定不能成名成家，但智商很高的人不一定能成名成家。在导致人成名成家的其他因素中，大部分属于情商。 由此可以推出：

单选题下面( )函数可能来自一个风险偏好者的效用函数。

单选题某单位要编排一个歌唱节目，在成员的选择上，要考虑以下原则：A的表演经验丰富，必须入选；B与C配合得最好，要么一起去，要么都不去：D的歌唱技巧需要C的指导，D去了，C一定要去；E与B都是唱高音的，只需要去其中一个。 那么这个节目的成员人数可能是几个?

单选题一则公益广告建议，喝酒的人应该等到能够安全开车时再开车。然而，一次医院调查发现，喝完酒后立即被询问的人低估了他们恢复开车能力所需的时间。这个结果表明，广告的建议其实是无效的。 如果以下陈述为真，哪一项最强地支持以上论述?

单选题设f(x)在[0，1]上连续，且F"(x)=f(x)，a≠0，则=______．A．F(1)-F(0)B．F(a)-F(0)C．D．a[F(a)-F(0)]

单选题对于两种商品，当其中一种商品的价格变化时，消费者同时增加或减少对两种商品的需求量，则这两种商品的交叉价格弹性系数( )。

单选题某项目在第5年的累计净现金流量为零，表明该项目的静态投资回收期（包括建设期）（ ）

单选题朱红：红松鼠在糖松的树皮上打洞以吸取树液。既然糖松的树液主要是由水和少量的糖组成的，这就大致可以确定红松鼠是为了寻找水或糖。水在松树生长的地方很容易通过其他方式获得。因此，红松鼠不会是因为找水而费力地打洞，它们可能是在寻找糖。 林娜：红松鼠一定不是找糖而是找其他什么东西，因为糖松树液中糖的浓度太低了，红松鼠必须饮用大量的树液才能获得一点点糖。

单选题八个部委联合宣布“网络游戏防范沉迷系统”及配套的《网络游戏防范沉迷系统实名认证方案》正式实施，未成年人玩网络游戏超过5小时，经验值和收益将计为0。这一方案的实施，将有效地防止未成年人沉迷于网络游戏。 以下哪项说法如果正确，能够最有力地削弱上述论证?

单选题所谓“凯思斯陷阱”一般产生于债券价格的( )．

单选题老王在A市有两套住房，一套自己居住，另一套闲置。老张是老王的朋友，一直居住在B市，现由于工作原因，需要在A市长期租住。老张希望租老王闲置的那套房子，老王说： “我女儿两个月后大学毕业，如果她毕业后不回A市工作生活，我就把房子出租给你。”下列选项中，哪些为真，可以证明老王没有说真话? (1)老王的女儿毕业后留在C市工作生活，老王拒绝把房子租给老张； (2)老王的女儿毕业后回到A市工作生活，老王把房子租给老张； (3)老王的女儿毕业后回到A市工作生活，老王拒绝把房子租给老张。

单选题In America and Europe magazine publishers have a common headache: total circulation is either flat or declining slightly as people devote more time to the internet, and an ever greater share of advertising spending is going online. Magazine units are mostly a drag on growth for their parents. Time Inc, the world' s biggest magazine company, has to fend off rum ours that its parent, Time Warner, will sell it. People in the industry expect that Time Warner will soon sell IPC Media, its British magazine subsidiary. The business model for consumer magazines is under pressure from several directions at once, both online and off. Magazines have become more expensive to launch, and the cost of attracting and keeping new subscribers has risen. In America newsstand sales have been worryingly weak, partly because supermarkets dominate distribution and shelf-space is in short supply. The internet's popularity has hit men's titles the hardest. FHM, the flagship "lads" magazine of Emap—a British media firm, for instance, lost a quarter of its circulation in the year to June. Not long ago consumer magazines were Emap's prize asset, but slowing growth from the division contributed to the company's decision to put itself up for sale. Men's magazines are in trouble in most developed-world markets as people have quickly switched from magazines to online services. There are good reasons why magazine owners should not feel pessimistic, however. For readers, many of the pleasing characteristics of magazines—their portability and glossiness, for instance— cannot be matched online. And magazines are not losing younger readers in the way that newspapers are. According to a study by the digital arm of Ogilvy Group, appetite for magazines is largely unchanged between older "baby boomers" and young "millennials". On the advertising side, magazines are faring much better than newspapers, which are losing big chunks of revenue as classified advertising shifts online. Advertisers like the fact that in many genres, such as fashion, readers accept and value magazine ads and even consider them part of the product. Unfortunately, magazine publishers have been slow to get onto the internet. "Eighteen months ago the internet was something they worried about after 4pm on Friday," says Peter Kreisky, a consultant to the media industry, "but now it's at the heart of their business model. " To their credit, however, big magazine firms are doing far more than reproducing their print products online. They offer people useful, fun services online—Lagardere' s Car and Driver website, for instance, offers virtual test drives, and Better Homes and Gardens online has a 3D planning tool to help people redesign their homes.

单选题有三个可行的投资方案，按投资由小到大的顺序为A、B、C，其差额投资回收期分别 为T B-A＝4年，T C-A＝3年，T C-B＝6年。若基准投资回收期为5年，则方案从优到劣的顺序为（ ）

单选题A pair of dice, rolled again and again, will eventually produce two sixes. Similarly, the virus that causes influenza is constantly changing at random and, one day, will mutate in a way that will enable it to infect billions of people, and to kill millions. Many experts now believe a global outbreak of pandemic flu is overdue, and that the next one could be as bad as the one in 1918, which killed somewhere between 25m and 50m people. Today however, advances in medicine offer real hope that another such outbreak can be contained—if governments start preparing now. New research published this week suggests that a relatively small stockpile of an antiviral drug—as little as 3m doses—could be enough to limit sharply a flu pandemic if the drugs were deployed quickly to people in the area surrounding the initial outbreak. The drug's manufacturer, Roche, is talking to the World Health Organisation about donating such a stockpile. This is good news. But much more needs to be done, especially with a nasty strain of avian flu spreading in Asia which could mutate into a threat to humans. Since the SARS outbreak in 2003 a few countries have developed plans in preparation for similar episodes. But progress has been shamefully patchy, and there is still far too little international coordination. A global stockpile of drugs alone would not be much use without an adequate system of surveillance to identify early cases and a way of delivering treatment quickly. If an outbreak occurred in a border region, for example, a swift response would most likely depend on prior agreements between different countries about quarantine and containment. Reaching such agreements is rarely easy, but that makes the task all the more urgent. Rich countries tend to be better prepared than poor ones, but this should be no consolation to them. Flu does not respect borders. It is in everyone's interest to make sure that developing countries, especially in Asia, are also well prepared. Many may bridle at interference from outside. But if richer nations were willing to donate anti-viral drugs and guarantee a supply of any vaccine that becomes available, poorer nations might be willing to reach agreements over surveillance and preparedness. Simply sorting out a few details now will have lives (and recriminations) later. Will there be enough ventilators, makes and drugs? Where will people be treated if the hospitals overflow? Will food be delivered as normal? Too many countries have no answers to these questions.