2007年GMAT考试最新逻辑推理试题训练十(A)

1.  Child’s World, a chain of toy stores, has relied on a “supermarket concept” of computerized inventory control and customer self-service to eliminate the category of sales clerks from its force of employees. It now plans to employ the same concept in selling children’s clothes.The plan of Child’s World assumes that
(A) supermarkets will not also be selling children’s clothes in the same manner
(B) personal service by sales personnel is not required for selling children’s clothes successfully
(C) the same kind of computers will be used in inventory control for both clothes and toys at Child’s World
(D) a self-service plan cannot be employed without computerized inventory control
(E) sales clerks are the only employees of Child’s World who could be assigned tasks related to inventory control
2.  Continuous indoor fluorescent light benefits the health of hamsters with inherited heart disease. A group of them exposed to continuous fluorescent light survived twenty-five percent longer than a similar group exposed instead to equal periods of indoor fluorescent light and of darkness.The method of the research described above is most likely to be applicable in addressing which of the following questions?
(A) Can industrial workers who need to see their work do so better by sunlight or by fluorescent light?
(B) Can hospital lighting be improved to promote the recovery of patients?
(C) How do deep-sea fish survive in total darkness?
(D) What are the inherited illnesses to which hamsters are subject?
(E) Are there plants that require specific periods of darkness in order to bloom?
3.  Millions of identical copies of a plant can be produced using new tissue-culture and cloning techniques.If plant propagation by such methods in laboratories proves economical, each of the following, if true, represents a benefit of the new techniques to farmers EXCEPT:
(A) The techniques allow the development of superior strains to take place more rapidly, requiring fewer generations of plants grown to maturity.
(B) It is less difficult to care for plants that will grow at rates that do not vary widely.
(C) Plant diseases and pests, once they take hold, spread more rapidly among genetically uniform plants than among those with genetic variations.
(D) Mechanical harvesting of crops is less difficult if plants are more uniform in size.
(E) Special genetic traits can more easily be introduced into plant strains with the use of the new techniques.
4.  Which of the following best completes the passage below?Sales campaigns aimed at the faltering personal computer market have strongly emphasized ease of use, called user-friendliness. This emphasis is oddly premature and irrelevant in the eyes of most potential buyers, who are trying to address the logically prior issue of whether______
(A) user-friendliness also implies that owners can service their own computers
(B) personal computers cost more the more user-friendly they are
(C) currently available models are user-friendly enough to suit them
(D) the people promoting personal computers use them in their own homes
(E) they have enough sensible uses for a personal computer to justify the expense of buying one
5.  A weapons-smuggling incident recently took place in country Y. We all know that Y is a closed society. So Y’s government must have known about the weapons.
    Which of the following is an assumption that would make the conclusion above logically correct?
(A) If a government knows about a particular weapons-smuggling incident, it must have intended to use the weapons for its own purposes.
(B) If a government claims that it knew nothing about a particular weapons-smuggling incident, it must have known everything about it.
(C) If a government does not permit weapons to enter a country, it is a closed society.
(D) If a country is a closed society, its government has a large contingent of armed guards patrolling its borders.
(E) If a country is a closed society, its government has knowledge about everything that occurs in the country.
6.  Banning cigarette advertisements in the mass media will not reduce the number of young people who smoke. They know that cigarettes exist and they know how to get them. They do not need the advertisements to supply that information.
    The above argument would be most weakened if which of the following were true?
(A) Seeing or hearing an advertisement for a product tends to increase people’s desire for that product.
(B) Banning cigarette advertisements in the mass media will cause an increase in advertisements in places where cigarettes are sold.
(C) Advertisements in the mass media have been an exceedingly large part of the expenditures of the tobacco companies.
(D) Those who oppose cigarette use have advertised against it in the mass media ever since cigarettes were found to be harmful.
(E) Older people tend to be less influenced by mass-media advertisements than younger people tend to be.
7.  People tend to estimate the likelihood of an event’s occurrence according to its salience; that is, according to how strongly and how often it comes to their attention.By placement and headlines, newspapers emphasize stories about local crime over stories about crime elsewhere and about many other major events.
    It can be concluded on the basis of the statements above that, if they are true, which of the following is most probably also true?
(A) The language used in newspaper headlines about local crime is inflammatory and fails to respect the rights of suspects.
(B) The coverage of international events in newspapers is neglected in favor of the coverage of local events.
(C) Readers of local news in newspapers tend to overestimate the amount of crime in their own localities relative to the amount of crime in other places.
(D) None of the events concerning other people that are reported in newspapers is so salient in people’s minds as their own personal experiences.
(E) The press is the news medium that focuses people’s attention most strongly on local crimes.
8.  By analyzing the garbage of a large number of average-sized households, a group of modern urban anthropologists has found that a household discards less food the more standardized—made up of canned and prepackaged foods—its diet is. The more standardized a household’s diet is, however, the greater the quantities of fresh produce the household throws away.
    Which of the following can be properly inferred from the passage?
(A) An increasing number of households rely on a highly standardized diet.
(B) The less standardized a household’s diet is, the more nonfood waste the household discards.
(C) The less standardized a household’s diet is, the smaller is the proportion of fresh produce in the household’s food waste.
(D) The less standardized a household’s diet is, the more canned and prepackaged foods the household discards as waste
(E) The more fresh produce a household buys, the more fresh produce it throws away.
Questions 9-10 are based on the following.
    In the past, teachers, bank tellers, and secretaries were predominantly men; these occupations slipped in pay and status when they became largely occupied by women. Therefore, if women become the majority in currently male-dominated professions like accounting, law, and medicine, the income and prestige of these professions will also drop.
9.  The argument above is based on
(A) another argument that contains circular reasoning
(B) an attempt to refute a generalization by means of an exceptional case
(C) an analogy between the past and the future
(D) an appeal to popular beliefs and values
(E) an attack on the character of the opposition
10  Which of the following, if true, would most likely be part of the evidence used to refute the conclusion above?
(A) Accountants, lawyers, and physicians attained their current relatively high levels of income and prestige at about the same time that the pay and status of teachers, bank tellers, and secretaries slipped.
(B) When large numbers of men join a female-dominated occupation, such as airline flight attendant, the status and pay of the occupation tend to increase.
(C) The demand for teachers and secretaries has increased significantly in recent years, while the demand for bank tellers has remained relatively stable.
(D) If present trends in the awarding of law degrees to women continue, it will be at least two decades before the majority of lawyers are women.
(E) The pay and status of female accountants, lawyers, and physicians today are governed by significantly different economic and sociological forces than were the pay and status of female teachers, bank tellers, and secretaries in the past.
11  An electric-power company gained greater profits and provided electricity to consumers at lower rates per unit of electricity by building larger-capacity more efficient plants and by stimulating greater use of electricity within its area. To continue these financial trends, the company planned to replace an old plant by a plant with triple the capacity of its largest plant.
    The company’s plan as described above assumed each of the following EXCEPT:
(A) Demand for electricity within the company’s area of service would increase in the future.
(B) Expenses would not rise beyond the level that could be compensated for by efficiency or volume of operation, or both.
(C) The planned plant would be sufficiently reliable in service to contribute a net financial benefit to the company as a whole.
(D) Safety measures to be instituted for the new plant would be the same as those for the plant it would replace.
(E) The tripling of capacity would not result in insuperable technological obstacles to efficiency.
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