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2007年GMAT考试最新逻辑推理仿真试题训练二十五

2009-07-17 16:59

  25 Minutes 16 Questions
  1.Since a rhinoceros that has no horn is worthless to poachers, the Wildlife Protection Committee plans to protect selected rhinoceroses from being killed by poachers by cutting off the rhinos’ horns.
  The Wildlife Protection Committee’s plan assumes that
  (A) poachers do not kill rhinos that are worthless to them
  (B) hornless rhinos pose less of a threat to humans, including poachers, than do rhinos that have horns
  (C) rhinos are the only animals poachers kill for their horns
  (D) hornless rhinos can successfully defend their young against nonhuman predators(A)
  (E) imposing more stringent penalties on poachers will not decrease the number of rhinos killed by poachers

  2.Crimes are mainly committed by the young, and for this reason merely increasing the number of police officers or expenditures on police services has little effect on reducing the crime rate. In fact, the only factor associated with a crime-rate drop is a decrease in the number of people in the community aged fourteen to thirty.
  The findings above can best serve as part of an argument against
  (A) the likelihood that any law enforcement program will be effective in reducing the crime rate within a short time
  (B) increasing prison terms for young people found guilty of crimes
  (C) introducing compulsory military conscription for people aged seventeen to nineteen
  (D) raising the age at which students are permitted to leave school(A)
  (E) a community’s plan to increase the number of recreational and educational activities in which young adults can participate

  3.A 20 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.
  Which of the following, if true, would most seriously weaken the argument above?
  (A) Harbor seals usually eat more fish than lobsters, but the seals are natural predators of both.
  (B) Although harbor seals are skillful predators of lobsters, they rarely finish eating their catch.
  (C) Harbor seals attract tourists to Maine’s coastal areas, thus revitalizing the local economy.
  (D) 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 catch.(E)
  (E) The record lobster harvests of the late 1970’s removed large numbers of mature lobsters from the reproductive stock.

  4.Politician: Fewer people are entering the labor market now than previously. If the economy grows, the demand for motivated and educated people will far outstrip the supply. Some companies have already started to respond to this labor-market situation by finding better ways to keep their current employees. Their concern is a sure indicator that the economy is growing.
  Which of the following is the best criticism of the politician’s reasoning?
  (A) The fact that companies are making prudent preparations for a possible future development does not mean that this development is already taking place.
  (B) The fact that some companies now try harder to keep their employees does not mean that they used to be indifferent to employee morale.
  (C) The fact that demand will outstrip supply does not mean that there will be no supply at all.
  (D) The fact that the number of new entrants into the labor market is declining does not mean that the number of new entrants is lower than it has ever been.(A)
  (E) The fact that current employees have become more valuable to some companies does not mean that those employees will do their jobs better than they used to.

  5.Under current federal law, employers are allowed to offer their employees free parking spaces as a tax-free benefit, but they can offer employees only up to $180 per year as a tax-free benefit for using mass transit. The government could significantly increase mass transit ridership by raising the limit of this benefit to meet commuters’ transportation costs.
  The proposal above to increase mass transit ridership assumes that
  (A) current mass transit systems are subject to unexpected route closings and delays
  (B) using mass transit creates less air pollution per person than using a private automobile
  (C) the parking spaces offered by employers as tax-free benefits can be worth as much as $2,500 per year
  (D) many employees are deterred by financial considerations from using mass transit to commute to their places of employment(D)
  (E) because of traffic congestion on major commuter routes, it is often faster to travel to one’s place of employment by means of mass transit than by private automobile

  6.Which of the following best completes the passage below?
  “Government” does not exist as an independent entity defining policy. Instead there exists a group of democratically elected pragmatists sensitive to the electorate, who establish policies that will result in their own reelection. Therefore, if public policy is hostile to, say, environmental concerns, it is not because of governmental perversity but because elected officials believe that______
  (A) environmentalists would be extremely difficult to satisfy with any policy, however environmentally sound
  (B) environmental concerns are being accommodated as well as public funds permit
  (C) the public is overly anxious about environmental deterioration
  (D) the majority of voters vote for certain politicians because of those politicians’ idiosyncratic positions on policy issues(E)
  (E) the majority of voters do not strongly wish for a different policy

  7.Fresh potatoes generally cost about $2 for a 10-pound bag, whereas dehydrated instant potatoes cost, on average, about $3 per pound. It can be concluded that some consumers will pay 15 times as much for convenience, since sales of this convenience food continue to rise.
  Which of the following, if true, indicates that there is a major flaw in the argument above?
  (A) Fresh potatoes bought in convenient 2-pound bags are about $1 a bag, or 2 1/2 times more expensive than fresh potatoes bought in 10-pound bags.
  (B) Since fresh potatoes are 80 percent water, one pound of dehydrated potatoes is the equivalent of 5 pounds of fresh potatoes.
  (C) Peeled potatoes in cans are also more expensive than the less convenient fresh potatoes.
  (D) Retail prices of dehydrated potatoes have declined by 20 percent since 1960 to the current level of about $3 a pound.(B)
  (E) As a consequence of labor and processing costs, all convenience foods cost more than the basic foods from which they are derived.

  8.Consumers in California seeking personal loans have fewer banks to turn to than do consumers elsewhere in the United States. This shortage of competition among banks explains why interest rates on personal loans in California are higher than in any other region of the United States.
  Which of the following, if true, most substantially weakens the conclusion above?
  (A) Because of the comparatively high wages they must pay to attract qualified workers, California banks charge depositors more than banks elsewhere do for many of the services they offer.
  (B) Personal loans are riskier than other types of loans, such as home mortgage loans, that banks make.
  (C) Since bank deposits in California are covered by the same type of insurance that guarantees bank deposits in other parts of the United States, they are no less secure than deposits elsewhere.
  (D) The proportion of consumers who default on their personal loans is lower in California than in any other region of the United States.(A)
  (E) Interest rates paid by California banks to depositors are lower than those paid by banks in other parts of the United States because in California there is less competition to attract depositors.

  9.Technically a given category of insurance policy is underpriced if, over time, claims against it plus expenses associated with it exceed total income from premiums. But premium income can be invested and will then yield returns of its own. Therefore, an underpriced policy does not represent a net loss in every case.
  The argument above is based on which of the following assumptions?
  (A) No insurance policies are deliberately underpriced in order to attract customers to the insurance company offering such policies.
  (B) A policy that represents a net loss to the insurance company is not an underpriced policy in every case.
  (C) There are policies for which the level of claims per year can be predicted with great accuracy before premiums are set.
  (D) The income earned by investing premium income is the most important determinant of an insurance company’s profits.(E)
  (E) The claims against at least some underpriced policies do not require paying out all of the premium income from those policies as soon as it is earned.

  10.Purebred cows native to Mongolia produce, on average, 400 liters of milk per year; if Mongolian cattle are crossbred with European breeds, the crossbred cows can produce, on average, 2,700 liters per year. An international agency plans to increase the profitability of Mongolia’s dairy sector by encouraging widespread crossbreeding of native Mongolian cattle with European breeds.
  Which of the following, if true, casts the most serious doubt on the viability of the agency’s plan?
  (A) Not all European breeds of cattle can be successfully bred with native Mongolian cattle.
  (B) Many young Mongolians now regard cattle raising as a low-status occupation because it is less lucrative than other endeavors open to them.
  (C) Mongolia’s terrain is suitable for grazing native herds but not for growing the fodder needed to keep crossbred animals healthy.
  (D) Cowhide and leather products, not milk, make up the bulk of Mongolia’s animal product exports to Europe.(C)
  (E) Many European breeds of cattle attain average milk production levels exceeding 2,700 liters.

  11.Any combination of overwork and stress inevitably leads of insomnia. Managers at HiCorp, Inc., all suffer from stress. A majority of the managers—despite their doctors’ warnings—work well over 60 hours per week, whereas the other managers work no more than the normal 40 hours per week. HiCorp gives regular bonuses only to employees who work more than 40 hours per week.
  Which of the following conclusions is most strongly supported by the statements above?
  (A) Managers at HiCorp work under conditions that are more stressful than the conditions under which managers at most other companies work.
  (B) Most of the employee bonuses given by HiCorp are given to managers.
  (C) At HiCorp, insomnia is more widespread among managers than among any other group of employees.
  (D) No manager at HiCorp who works only 40 hours per week suffers from overwork.(E)
  (E) Most of the managers at HiCorp who receive regular bonuses have insomnia.

  12.Holiday receipts—the total sales recorded in the fourth quarter of the year—determine the economic success or failure of many retail businesses. Camco, a retailer selling just one camera model, is an excellent example. Camco’s holiday receipts, on average, account for a third of its yearly total receipts and about half of its yearly profits.
  If the statements above are true, which of the following must also be true about Camco on the basis of them?
  (A) Its fixed expenses per camera sold are higher during the fourth quarter than for any of the other three quarters.
  (B) It makes more profit during the first and third quarters combined than during the fourth quarter.
  (C) Its per-camera retail price is lower, on average, during the fourth quarter than during any one of the first three quarters.
  (D) It makes less profit, on average, for a given dollar amount of sales during the first three quarters combined than during the fourth quarter.(D)
  (E) The per-camera price it pays to wholesalers is higher, on average, during the fourth quarter than during any of the other three quarters.

  13.Canadians now increasingly engage in “out-shopping,” which is shopping across the national border, where prices are lower. Prices are lower outside of Canada in large part because the goods-and-services tax that pays for Canadian social services is not applied.
  Which one of the following is best supported on the basis of the information above?
  (A) If the upward trend in out-shopping continues at a significant level and the amounts paid by the government for Canadian social services are maintained, the Canadian goods-and-services tax will be assessed at a higher rate.
  (B) If Canada imposes a substantial tariff on the goods bought across the border, a reciprocal tariff on cross-border shopping in the other direction will be imposed, thereby harming Canadian businesses.
  (C) The amounts the Canadian government pays out to those who provide social services to Canadians are increasing.
  (D) The same brands of goods are available to Canadian shoppers across the border as are available in Canada.(A)
  (E) Out-shopping purchases are subject to Canadian taxes when the purchaser crosses the border to bring them into Canada.

  14.Surveys indicate that 52 percent of all women aged eighteen to sixty-five are in the labor force (employed outside the home) in any given month. On the basis of these surveys, a market researcher concluded that 48 percent of all women aged eighteen to sixty-five are full-time homemakers year-round.
  Which of the following, if true, would most seriously weaken the researcher’s conclusion?
  (A) More women are in the labor force today than during any other period since the Second World War.
  (B) Many workers, both men and women, enter and exit the labor force frequently.
  (C) Although only a small sample of the total population is surveyed each month, these samples have been found to be a reliable indicator of total monthly employment.
  (D) Surveys show that more women than ever before consider having a rewarding job an important priority.(B)
  (E) Women who are in the labor force have more discretionary income available to them than do women who are not.

  15.  Left-handed persons suffer more frequently than do right-handed persons from certain immune disorders, such as allergies. Left-handers tend to have an advantage over the right-handed majority, however, on tasks controlled by the right hemisphere of the brain, and mathematical reasoning is strongly under the influence of the right hemisphere in most people.
  If the information above is true, it best supports which of the following hypotheses?
  (A) Most people who suffer from allergies or other such immune disorders are left-handed rather than right-handed.
  (B) Most left-handed mathematicians suffer from some kind of allergy.
  (C) There are proportionally more left-handers among people whose ability to reason mathematically is above average than there are among people with poor mathematical reasoning ability.
  (D) If a left-handed person suffers from an allergy, that person will probably be good at mathematics.(C)
  (E) There are proportionally more people who suffer from immune disorders such as allergies than there are people who are left-handed or people whose mathematical reasoning ability is unusually good.

  16.After observing the Earth’s weather patterns and the 11-year sunspot cycle of the Sun for 36 years, scientists have found that high levels of sunspot activity precede shifts in wind patterns that affect the Earth’s weather. One can conclude that meteorologists will be able to improve their weather forecasts based on this information.
  Which of the following, if true, most seriously weakens the argument above?
  (A) Weather forecasts are more detailed today than they were 36 years ago.
  (B) Scientists can establish that sunspot activity directly affects the Earth’s weather.
  (C) Evidence other than sunspot activity has previously enabled meteorologists to forecast the weather conditions that are predictable on the basis of sunspot activity.
  (D) Scientists have not determined why the sunspot activity on the Sun follows an 11-year cycle.(C)
  (E) It has been established that predictable wind patterns yield predictable weather patterns.

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