MBA每日一练（2019/2/20）

第1题：已知直线l1与l2所成角的平分线为y=x，如果l1的方程是ax+by+c=O(ab＞0)，那么l2的方程是( ) A．bx+ay+c=0 B．ax-by+c=0 C．bx+ay-c=0 D．bx-ay+c=0 E、以上都不对

【单选题】： A     B     C     D     E

第2题：The invention of both labor-saving tools and tools of intelligence is rarely accidental. Instead, it is usually the product of human need; (21) is truly the mother of invention. People usually devise tools to (22) for natural deficiencies. For example, people invented weapons to defend (23) from physically superior (24) .But (25) is only one incentive for inventions. People also invent (26) tools to (27) certain established tasks more efficiently. For instance, people developed the bow and arrow from the (28) spear or javelin in order to shoot (29) and strike with greater strength. (30) civilizations developed, greater work efficiency came to be demanded, and (31) tools became more (32) .A、tool would (33) a function until it proved (34) in meeting human needs, at which point an improvement would be made. One impetus for invention has always been the (35) for speed and high-quality results--provided they are achieved (36) reasonable costs. Stone pebbles were sufficient to account for small quantities of possessions, (37) they were not efficient enough for performing sophisticated mathematics. However, beads arranged systematically evolved into the abacus. The (38) of this tool can be (39) to the development of commerce in theEast around 3000B、C、, and the abacus is known (40) by the ancientBabylonians,Egyptians,Chinese, etC、 A、their possessions B、their children C、themselves D、them

【单选题】： A     B     C     D

第3题：If , then

【单选题】： A     B     C     D

第4题：TheAfricans’ interest is to guard preferential export rules enshrined in the temporaryAfrican Growth and OpportunityAct, passed byCongress in 2,000. Tariff-free exports of some 6,000 goods fromAfrica to the United States are boosting trade and investment in southernAfric A、Lesotho’s fast-growing textile industry depends almost entirely onChinese investment in factories to make clothes for sale in the United States. The region also wants more access toAmerica’s markets for fruit, beef and other agricultural goods. American interest lies mainly in SouthAfrica, by far the largest economy in the region. Services account for 60% of its GDP, and it increasingly dominates the rest ofAfrica in banking, information technology, telecom, retail’ and other areas. Just asBritish banks, such asBarclays, have moved theirAfrican headquarters to SouthAfrica over the past year,American investors see the country as a platform to the rest of the continent. Agreeing investment rules and resolving differences on intellectual property rights are the most urgent issues.American drug firms want to be part of the fast expansion in SouthAfrica of production of anti-retroviral drugs, used againstAIDS.By 2007 SouthAfrica alone expects 1.2m patients to take the drugs daily. The country might be the world’s biggest exporter of anti-AIDS drugs within a few years. Striking a bilateral deal now should makeAmerican investments easier. But Mr. Zoellick’s greater concern is for multilateral trade talks that stalled inCancun, Mexico, in September.AlecErwin, his SouthAfrican counterpart, helped to organize the G20 group of poor and middle-income countries that opposed jointAmerican-EU proposals there; he is widely tipped to take over as head of the World Trade Organization late next year, and would be a useful ally. So Mr. Zoellick is trying to charm hisAfrican partner by agreeing to drop support for most of a group of issues (known as "Singapore" issues) that jammed up the talks atCancun, and were opposed by poor countries; he says he also favors abolishing export subsidies inAmerica--though only if Japan and theEU agree to do the same. That would pleaseAfrican exporters who say such subsidies destroy markets for their goods. Mr. Zoellick’s efforts to make more friends may be paying off.Even thoughAmerica has treatedAfrica very shabbily on trade in the past, Mr.Erwin hints it is easier doing business withAmerica than withEurope or Japan. A、small sign, but perhaps a telling one. American drug makers want to get a share in the anti-AIDS drug production in SouthAfrica in that ______. A、the U.S. domestic anti-AIDS drug market is shrinking quickly B、American drug makers have a lot of extra capital to invest C、the bilateral deal has made U.S. investments much easier now D、SouthAfrica has a huge global market potential in these drugs

【单选题】： A     B     C     D

第5题：One of the questions that is coming into focus as we face growing scarcity of resources of many kinds in the world is how to divide limited resources among countries. In the international development community, the conventional wisdom has been that the 2 billion people living in poor countries could never expect to reach the standard of living that most of us in NorthAmerica enjoy, simply because the world does not contain enough iron ore, protein, petroleum, and so on.At the same time, we in the United States have continued to pursue super affluence as though there were no limits on how much we could consume. We make up 6 percent of the world’s people; yet we consume one-third of the world’s resources. As long as the resources we consumed each year came primarily from within our own boundaries, this was largely an internal matter.But as our resources come more and more from the outside world, "outsiders" are going to have some say over the rate at which and terms under which we consume. We will no longer be able to think in terms of "our" resources and "their" resources, but only of common resources. AsAmericans consuming such a disproportionate share of the world’s resources, we have to question whether or not we can continue our pursuit of super affluence in a world of scarcity. We are now reaching the point where we must carefully examine’ the presumed link between our level of well-being and the level of material goods consumeD、If you have only one crust of bread and get another crust of bread, your well-being is greatly enhanceD、But if you have a loaf of bread, then an additional crust of bread doesn’t make that much difference. In the eyes of most of the world today,Americans have their loaf of bread and are asking for still more. People elsewhere are beginning to ask why. This is the question we’re going to have to answer, whether we’re trying to persuade countries to step up their exports of oil to us or trying to convince them that we ought to be permitted to maintain our share of the world fish catch. The prospect of a scarcity of, and competition for, the world’s resources requires that we reexamine the way in which we relate to the rest of the worlD、It means we find ways of cutting back on resource consumption that is dependent on the resources and cooperation of other countries. We cannot expect people in these countries to concern themselves with our worsening energy and food shortages unless we demonstrate some concern for the hunger, illiteracy and disease that are diminishing life for them. By "common resources" (Paragraph 2), the author means that ______. A、the resources possessed by the United States should be shared by other countries B、Americans have the right to consume resources both from their home country and from abroad C、it is difficult to distinguish the resources possessed byAmerica from those possessed by other countries D、all the resources in the world should be shared by all the countries

【单选题】： A     B     C     D

第6题：It is just one example of the growing concern over the increasing power consumption and environmental impact of computers. A、study found that the power consumption of data centers doubled between 2000 and 2005, and now accounts for 1.2% ofAmerican electricity consumption, though other estimates put the figure at 4%.Companies now spend as much as 10% of their technology budgets on energy, says Rakesh Kumar of Gartner, a consultancy. Power consumption has increased because of the rise of the internet, of course, but also because of way in which computers have historically been designed: to maximize performance at all costs.Between 1996 and 2006, the number of servers in use went from 6 million to 28 million and the average power consumption of each server grew from 150 watts to 400 watts.But things are now starting to change and the computer industry has been seized with enthusiasm for "green computing".

【分析题】：

第7题：One of the questions that is coming into focus as we face growing scarcity of resources of many kinds in the world is how to divide limited resources among countries. In the international development community, the conventional wisdom has been that the 2 billion people living in poor countries could never expect to reach the standard of living that most of us in NorthAmerica enjoy, simply because the world does not contain enough iron ore, protein, petroleum, and so on.At the same time, we in the United States have continued to pursue super affluence as though there were no limits on how much we could consume. We make up 6 percent of the world’s people; yet we consume one-third of the world’s resources. As long as the resources we consumed each year came primarily from within our own boundaries, this was largely an internal matter.But as our resources come more and more from the outside world, "outsiders" are going to have some say over the rate at which and terms under which we consume. We will no longer be able to think in terms of "our" resources and "their" resources, but only of common resources. AsAmericans consuming such a disproportionate share of the world’s resources, we have to question whether or not we can continue our pursuit of super affluence in a world of scarcity. We are now reaching the point where we must carefully examine’ the presumed link between our level of well-being and the level of material goods consumeD、If you have only one crust of bread and get another crust of bread, your well-being is greatly enhanceD、But if you have a loaf of bread, then an additional crust of bread doesn’t make that much difference. In the eyes of most of the world today,Americans have their loaf of bread and are asking for still more. People elsewhere are beginning to ask why. This is the question we’re going to have to answer, whether we’re trying to persuade countries to step up their exports of oil to us or trying to convince them that we ought to be permitted to maintain our share of the world fish catch. The prospect of a scarcity of, and competition for, the world’s resources requires that we reexamine the way in which we relate to the rest of the worlD、It means we find ways of cutting back on resource consumption that is dependent on the resources and cooperation of other countries. We cannot expect people in these countries to concern themselves with our worsening energy and food shortages unless we demonstrate some concern for the hunger, illiteracy and disease that are diminishing life for them. What is the conclusion of this passage A、The United States will be isolated if it does not stop pursuing super affluence. B、The poor countries will no longer supply the United States with their goods. C、The United States should care about the well-being of other countries. D、It is time for theAmericans to help the people in poor countries to improve their living standards.

【单选题】： A     B     C     D

第8题： A、条件(1)充分，但条件(2)不充分． B、条件(2)充分，但条件(1)不充分． C、条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． D、条件(1)充分，条件(2)也充分． E、条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分． 关于x的方程x2-2(m+2)x-3m2-5=0(m∈Q)两实根为有理根． (1) ，m，2成等比；(2)m满足m2-m-2=0．

【分析题】：

第9题：When theAmerican economy was running full tilt two years ago, few places were as breathlessly delighted as Seattle. Its port was thronged with ships bringing goods fromAsi A、TheBoeingCompany could barely keep up with demand for its airliners. Microsoft was hiring hordes of software engineers.After each rain shower, another Internet millionaire sprang up. Here was a city that had it all--OldEconomy, NewEconomy, Not-Yet-InventedEconomy. Now it has all gone sour. The past 12 months have been a non-stop succession of disappointments.Boeing’s headquarters decamped toChicago. The Internet economy popped alike a balloon in a nail factory, taking with it once promising local ventures such as Homegrocer.com and leaving can’t-possibly-miss companies such as drugstore.com barely hanging on.And an already troubledBoeing was hit even harder after September 11th both by a steep drop in airliner orders and by losing a $ 200 billion Joint Strike Fighter contract to Lockheed Martin. Washington State, battered by what is happening in Seattle, now has the highest unemployment rate in the United States--6.6% compared with 5.4% in the country as a whole. Right behind it is next-door Oregon, another former boom state, with 6.5% of its workforce out of a job, the country’s second worst figure. In Oregon, manufacturing’s collapse has caused the loss of nearly 30,000 jobs in a year, those hit range from Freightliner, a maker of heavy lorries, to high-tech companies such as Intel and Fujitsu. What makes the current plunge so painful is that every part of the economy seems to have stepped into an open manhole at the same time. Three years ago, whenBoeing began to remove more than 20,000 people thatBoeing expects to lay off by the middle of 2002 have to compete with unemployed workers not just from the high-tech industry but from construction work and even the retail sector. Portland now has more jobless than the other parts of Oregon: the opposite of how things were years ago. Even worse, the Pacific north west’s downturn, as well as being deeper than the rest of the country, may also last longer. One reason for fearing this isBoeing’s continuing woes. NowadaysBoeing accounts for less than 5% of employment in the Seattle area, down from 9% two decades ago.But it remains the foundation on which the rest is built. Its network of suppliers and subcontractors gives it a far stronger multiplier effect than, say, Microsoft, which is more an island of prosperity than a center of weB、The chances are thatBoeing will not really bounce back until the assumed revival in air travel persuades airline companies to start buying plenty of aircraft again.And that may not be until 2003. We can learn from the last paragraph that ______. A、Microsoft has a strong multiplier effect on the economy B、Boeing is crucial for the survival of other companies C、Seattle area’s employment rate has fallen considerably D、the economic foundation of Seattle isBoeing’s continuing prosperity

【单选题】： A     B     C     D

第10题：以下各题基于以下题干： 李昌和王平的期终考试课程共五门。他俩的成绩除了历史课相同外，其他的都不同。他俩的各门考试都及格了，即每门成绩都在60分与100分之间。 以下哪项关于上述考试的断定如果为真，使你能结合题干的信息，确定李昌五门课程的平均成绩高于王平。 Ⅰ．李昌的最低分高于王平的最高分。 Ⅱ．至少有四门课程，李昌的平均分高于王平的平均分。 Ⅲ．至少有一门课程，李昌的成绩分别高于王平各门课程的成绩。A．只有Ⅰ。 B．只有Ⅱ。 C．只有Ⅲ。 D．只有Ⅰ和Ⅱ E．Ⅰ、Ⅱ和Ⅲ。

【单选题】： A     B     C     D     E