1、工商(经企)管理硕士入学考试(GMAT)-5 及答案解析(总分：145.00，做题时间：90 分钟)一、单项选择题(总题数：29，分数：145.00)1.If p and q are positive integers, what is the value of q? (1)q p-1 =1 (2)p=1（分数：5.00）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2.A 20
2、percent decline in lobster catches in Maine waters since 1980 can be justifiably blamed on legislation passed in 1972 to protect harbor seals. Maine“s population of harbor seals is now double the level existing before protection was initiated, and these seals are known to eat both fish and lobsters.
3、 Which of the following, if tree, would most seriously weaken the argument above?（分数：5.00）A.Harbor seals usually eat more fish than lobsters, but the seals are natural predators of bothB.Although harbor seals are skillful predators of lobsters, they rarely finish eating their catchC.Harbor seals att
4、ract tourists to Maine“s coastal areas, thus revitalizing the local economyD.Authors of the 1972 legislation protecting harbor seals were convinced that an increase in that animal“s numbers would not have a measurably negative impact on the lobster catchE.The record lobster harvests of the late 1970
5、“s removed large numbers of mature lobsters from the reproductive stock3.Census data for Prenland show that unmarried Prenlandic men in their thirties outnumber unmarried Prenlandic women in that age group by about ten to one. Most of these men do wish to marry. Clearly, however, unless many of them
6、 marry women who are not Prenlandic, all but a minority will remain unmarried. The argument makes which of the following assumptions?（分数：5.00）A.Emigration from Prenland is more common among women than among menB.A greater proportion of Prenlandic women in their thirties than of Prenlandic men of the
7、 same age would prefer to remain unmarriedC.It is unlikely that many of these unmarried Prenlandic men will marry women more than a few years older than themselvesD.Prenland has a high rate of divorceE.Most of the unmarried Prenlandic men are unwilling to marry women who are not Prenlandic4. （分数：5.0
8、0）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5.The most widely used therapy for a certain type of ulcer completely heals such ulcers in 44 percent of patients within six months. In a six-month trial of a new ther
9、apy for this type of ulcer, 80 percent of ulcers treated achieved significant healing and 61 percent were completely healed. Since the trial treated only ulcers of this type that were worse than average, the new therapy clearly promotes healing more effectively than the most widely used therapy. The
10、 answer to which of the following would be most useful in evaluating the argument given?（分数：5.00）A.What differences are there, if any, in the ways that the two therapies are administered?B.Is there any significant difference between the costs associated with the two therapies?C.What percentage of pe
11、ople with ulcers of this type who were treated with the most widely used therapy for six months experienced significant healing?D.How quickly do ulcers of this type, if left untreated, become significantly worse?E.What percentage of patients involved in the six-month trial of the new therapy were di
12、sappointed at the rate of healing that were experiencing?6.Pollutants in the atmosphere can cause acid rain (rain with high acidity levels). While acid rain in itself cannot significantly affect the acidity of bodies of water into which it falls, it can greatly increase the acidity of nearby lakes b
13、y increasing the amount of decaying matter on a forest floor. A recent increase in the acidity of the water in Forest Lake, therefore, surely indicates that the rain failing nearby has become more acid. Which of the following, if tree, most seriously weakens the argument?（分数：5.00）A.Even in areas wit
14、hout significant amounts of acid rain, most lakes in regions with vegetation similar to the vegetation around Forest Lake have acidity levels higher than those of other lakesB.Recent air-quality tests in the region around Forest Lake have revealed a slight increase in the amount of pollutants in the
15、 airC.Large-scale logging, which was recently begun in the forest surrounding Forest Lake, has increased the amount of decaying matter on the forest floorD.There is some disagreement among scientists about exactly how pollutants in the atmosphere cause acid rainE.Decaying matter exists on all forest
16、 floors and is an important factor in maintaining the healthy growth of the forests7.If money is invested at r percent interest, compounded annually, the amount of the investment will double in approximately （分数：5.00）A.$20,000B.$15,000C.$12,000D.$10,000E.$9,0008.A cashier mentally reversed the digit
17、s of one customer“s correct amount of change and thus gave the customer art incorrect amount of change. If the cash register contained 45 cents more than it should have as a result of this error, which of the following could have been the correct amount of change in cents?（分数：5.00）A.14B.45C.54D.65E.
18、839.If a certain grove consists of 36 pecan trees, what was the yield per tree last year? (1)The yield per tree for the 18 trees in the northern half of the grove was 60 kilograms last year. (2)The yield per tree for the 18 trees in the eastern half of the grove was 55 kilograms last year.（分数：5.00）A
19、.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10. （分数：5.00）A.24,000B.26,664C.40,440D.60,000E.66,66011.In the aftermath of a worldwide stock-market crash, Country T claimed that the severity of the stock-market crash
20、it experienced resulted from the accelerated process of denationalization many of its industries underwent shortly before the crash. Which of the following, if it could be carried out, would be most useful in an evaluation of Country T“s assessment of the causes of the severity of its stock-market c
21、rash?（分数：5.00）A.Calculating the average loss experienced by individual traders in Country T during the crashB.Using economic theory to predict the most likely date of the next crash in Country TC.Comparing the total number of shares sold during the worst days of the crash in Country T to the total n
22、umber of shares sold in Country T just prior to the crashD.Comparing the severity of the crash in Country T to the severity of the crash in countries otherwise economically similar to Country T that have not experienced recent denationalizationE.Comparing the long-term effects of the crash on the pu
23、rchasing power of the currency of Country T to the immediate, more severe short-term effects of the crash on the purchasing power of the currency of Country T12.In a recent study, sedentary middle-aged men who drink more than two cups of coffee a day were found more likely than other sedentary middl
24、e-aged men to have a high blood level of cholesterol, which is a factor increasing risk of heart disease. Cholesterol can reach the blood from food and drink but is not contained in coffee. Which of the following, if true, most seriously weakens a conclusion from the study that for sedentary middle-
25、aged men coffee increases the risk of heart attack?（分数：5.00）A.A sedentary style of life increases levels of cholesterol in the bloodB.Coffee contains caffeine, which acts as a stimulant that increases heart rateC.The men studied drank their coffee without milk or cream, which contain cholesterolD.In
26、 both groups, the men were likely to be overweight, and excess weight is a factor that increases risk of heart diseasesE.The men who drank more than two cups of coffee a day also ate more foods high in cholesterol13.The pharmaceutical industry argues that because new drugs will not be developed unle
27、ss heavy development costs can be recouped in later sales, the current 20 years of protection provided by patents should be extended in the case of newly developed drugs. However, in other industries newproduct development continues despite high development costs, a fact that indicates that the exte
28、nsion is unnecessary. Which of the following, if true, most strongly supports the pharmaceutical industry“s argument against the challenge made above?（分数：5.00）A.No industries other than the pharmaceutical industry have asked for an extension of the 20-year limit on patent protectionB.Clinical trials
29、 of new drugs, which occur after the patent is granted and before the new drug can be marketed, often now take as long as 10 years to completeC.There are several industries in which the ratio of research and development costs to revenues is higher titan it is in the pharmaceutical industryD.An exist
30、ing patent for a drug does not legally prevent pharmaceutical companies from bringing to market alternative drugs, provided they are sufficiently dissimilar to the patented drugE.Much recent industrial innovation has occurred in productsfor example, in the computer and electronics industriesfor whic
31、h patent protection is often very ineffective14.Dense snow cover can cause unusually harsh weather patterns to persist. If a severe winter storm blankets the Great Plains, the snow cover reflects the sun“s radiation back into space and thus keeps the temperature of the ground tow. Consequently, cold
32、 air moving down from Canada remains cold enough to cause more snowstorms. Which of the following is a conclusion that can be properly drawn from the information above?（分数：5.00）A.Winter weather on the Great Plains is the product of unusual movements of air massesB.The Great Plains are more likely th
33、an other areas to suffer unusually harsh weather patternsC.If the Great Plains get more snow than usual early in the winter and the snow remains until the spring thaw, the winter is likely to be colder than usualD.Even if the temperatures on the Great Plains are not extremely cold but are just below
34、 freezing, a moderate snowstorm will probably turn into a blizzardE.The temperature of the ground depends primarily on the thickness of the snow cover15.During the four years that Mrs. Lopez owned her car, she found that her total car expenses were $18,000. Fuel and maintenance costs accounted for o
35、f the total and depreciation accounted for of the remainder. The cost of insurance was 3 times the cost of financing, and together these two costs accounted for （分数：5.00）A.$1,500 moreB.$1,200 moreC.$100 lessD.$300 lessE.$1,500 less16.The chart above shows how Jeff spent his earnings for one year. Ho
36、w much did Jeff spend for clothing? (1)He spent $18 during the year on tennis balls. (2)He spent $190 during the year on recreation（分数：5.00）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17.If the product of the inte
37、gers , x, y, and z is 770, and if 1zyz, what is the value of +z?（分数：5.00）A.10B.13C.16D.18E.2118.If , x, y, and z are non-negative integers, each less than 3, and (3 3 )+x(3 2 )+y(3)+z=34，then+z=（分数：5.00）A.0B.1C.2D.3E.419.Nuclear fusion is a process whereby the nuclei of atoms are joined, or “fused,“
38、 and in which energy is released. One of the by-products of fusion is helium-4 gas. A recent fusion experiment was conducted using “heavy“ water contained in a sealed flask. The flask was, in turn, contained in an air-filled chamber designed to eliminate extraneous vibration. After the experiment, a
39、 measurable amount of helium-4 gas was found in the air of the chamber. The experimenters cited this evidence in support of their conclusion that fusion had been achieved. Which one of the following, if tree, would cast doubt on the experimenters“ conclusion?（分数：5.00）A.Helium 4 was not the only gas
40、found in the experiment chamberB.When fusion is achieved, it normally produces several byproducts, including tritium and gamma raysC.The amount of helium 4 found in the chamber“s air did not exceed the amount of helium 4 that is found in ordinary airD.Helium 4 gas rapidly breaks down, forming ordina
41、ry helium gas after a few hoursE.Nuclear fusion reactions are characterized by the release of large amounts of heat20.If f and g are distinct prime numbers less than 10, which of the following cannot be the product of f and g?（分数：5.00）A.6B.9C.10D.14E.1521.A museum director, in order to finance expen
42、sive new acquisitions, discreetly sold some paintings by major artists. All of them were paintings that the director privately considered inferior. Critics roundly condemned the sale, charging that the museum had lost first-rate pieces, thereby violating its duty as a trustee of art for future gener
43、ations. A few months after being sold by the museum, those .paintings were resold, in an otherwise stagnant art market, at two to three times the price paid to the museum. Clearly, these prices settle the issue, since they demonstrate the correctness of the critics“ evaluation. The reasoning in the
44、argument is vulnerable to the criticism that the argument does which one of the following?（分数：5.00）A.It concludes that a certain opinion is correct on the grounds that it is held by more people than hold the opposing viewB.It rejects the judgment of the experts in an area in which there is no better
45、 guide to the truth than expert judgmentC.It rejects a proven means of accomplishing an objective without offering any alternative means of accomplishing that objectiveD.It bases a firm conclusion about a state of affairs in the present on somewhat speculative claims about a future state of affairsE
46、.It bases its conclusion on facts that could, in the given situation, have resulted from causes other than those presupposed by the argument22.Is the integer n a multiple of 140? (1) n is a multiple of 10. (2) n is a multiple of 14.（分数：5.00）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
47、(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23. （分数：5.00）A.10%B.20%C.30%D.40%E.50%24.Town T has 20,000 residents, 60 percent of whom are female. What percent of the residents were born in Town T? (1)The number of female residents who were born in Town T is twice the numbe
48、r of male residents who were not born in Town T. (2)The number of female residents who were not born in Town T is twice the number of male residents who were born in Town T.（分数：5.00）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
49、条件(2)联合起来也不充分25.The proposal to extend clinical trials, which are routinely used as systematic tests of pharmaceutical innovations, to new surgical procedures should not be implemented. The point is that surgical procedures differ in one important respect from medicinal drugs: a correctly prescribed drug depends for its effectiveness only on the drug“s composition, whereas the effectiveness of even the most appropriate surgical procedure is transparently related to the skills of the surgeon who uses it. The reasoning in the argument is flawed because t
