【GMAT考满分题库检索】GMAT逻辑CR题库_GMAT 真题

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Magoosh题集

考生使用的相对较少。很多同学用Magoosh题目模考，有一定的训练价值。
其中，CR部分共有 182 题。

题目列表

序号	题目内容
101	Pediatrician: Child psychologists recommend that mothers of one-year-olds not only name objects in the immediate environment, but that they include the color of the object, when applicable. For instance, if a mother hands her child a red ball, she should say, “This is a red ball.” Nonetheless, even if mothers began to name the color, instead of simply saying, “This is a ball,” no real benefit will be conferred to the child, because studies have shown that children under 18-months old do not grasp the notion of color.The pediatrician’s argument is most vulnerable to which of the following?
102	The Z-300 is a particularly fast new sports car, popular among young drivers. It is an expensive model, and relatively few are on the roads. Two months ago, seven different young people in Catoville were arrested for operating the Z-300 at excessive speeds on local roads while having a blood alcohol level well above the legal limit. Since then, a police watch group has reported that Catoville traffic cops frequently have been pulling over drivers of the Z-300 and testing them for alcohol: the total number of Z-300 drivers stopped and tested is five times greater than the total number of drivers of all other makes or models stopped and tested. Which of following conclusions can most properly be drawn from the information above?
103	For centuries, mathematics seemed to exist in service to the natural sciences. Many of the great mathematical breakthroughs, like Newton's Calculus, were spearheaded in the effort to solve scientific questions. In the nineteenth century, though, mathematicians made it clear that the primary object of mathematical study were the abstract creations of mathematics—numbers and shapes and functions and their more abstruse extensions—irrespective of whether this study has any bearing on scientific investigation. Therefore, mathematics is not properly one of the natural sciences.Which of the following is an assumption that supports drawing the conclusion above from the reasons given for that conclusion?
104	A manager is hoping to reach a certain target for camera sales in his store, which sells between 10 and 20 cameras a week. Typically, most cameras sold in any week are the less expensive economy models, and his store has sold relatively fewer of the more expensive, high-end cameras. The manager realizes that if, on average, three more cameras sold each week were high-end instead of economy models, the store would reach its target in sales. The manager prepares a detailed information sheet for the sales associates, outlining the numerous advantages of the high-end cameras over the economy cameras, and provides each sales associate with a portfolio of contrasting photos of the same images, showing the clearly superior image quality of the high-end cameras. Which of the following, if true, would provide most support for the prediction that the detailed information sheet and photo portfolio given to sales associates will have its intended effect of allowing the store to reach its target in sales?
105	During the period in which there are no competitive races, two runners--Runners A and Runners B--take part in an experiment measuring their VO2 max, the volume of oxygen an athlete can use. During these sessions, the runners engaged in moderate aerobic activity, or a sustained heart rate between 146-154 beats per minute. At the end of the sessions, Runner A had a greater VO2 max than did Runner B. Therefore, once the two runners begin identical intensive training--sessions involving over 168 beats per minute-- for the race season, Runner A will continue to have the greater VO2 max, assuming that neither become injured and that both train with similar intensity.Which of the following is an assumption upon which the argument rests?
106	The excessive paperwork used to process claims at Brakeland Insurance Company, not the increase in accident claims involving privately owned cars, is responsible for the declining profits at Brakeland since the appointment of its new CEO. Sterling Auto Insurance Company has seen a similar increase in accidents among its insured vehicles, but while Brakeland's profits have decreased, Sterling's have increased in the same time period.Which of the following, if true, would most weaken the argument above?
107	Benford’s Law states that most phenomena in nature begin with ‘1’s and ‘2's. The law has been shown to apply very accurately to the amount of money listed on people’s income statements. Investigators have used this fact when investigating financial fraud, and can often determine when people have fabricated numbers, since the perpetrators will choose varying amounts so that the first number in each of those amounts is distributed evenly from ‘1’ to ‘9’. Proponents of Benford’s Law, therefore, argue that as the technique of applying Benford’s law becomes even more refined, an expert’s ability to determine whether a plaintiff has engaged in financial fraud will become as accurate in determining guilt as a fingerprint is today.Which of the following, if true, casts the most doubt on the conclusion drawn by proponents of Benford’s Law?
108	A technology company plans to develop a prototype laptop that uses iris scanners that can distinguish one user from another. The inventor of this laptop claims that it will reduce insurance and security costs at offices, as only authorized users will be able to turn on the laptop, making it a less appealing target for thieves.Which of the following, if true, most supports the company's implementing its plan to develop the prototype?
109	The following is an excerpt from a campaign speech. Senator Baker: My opponent, Candidate Rothmore, has called for increased taxes to fund programs that help the long-term unemployed of the state. Such action would address an immediate symptom for a select group, without doing much to address the overall problems we all face. Only through lowering taxes can we stimulate the growth of small businesses, which will revitalize the state's whole economy. That, in turn, will result in greater prosperity and in more jobs, including jobs for those who have been unemployed for a while. Through lowering taxes, everyone wins, and those currently unemployed get the best help the economy can provide --- a real job. In the argument, the two portions in boldface play which of the following roles?
110	Accidents involving drivers who do not wear seatbelts have been shown to cause higher rates of serious injury than accidents involving drivers who do wear seatbelts. Because drivers who do not wear seatbelts can end up costing taxpayers money in medical bills, Thoracic County should make it illegal to drive without a seatbelt.Which of the following, if true, provides the most support for the argument above?
111	Flagpole Army Base in Oregon and Klondike Army Base in Alaska are similar bases with similar duty loads. Despite the similarities, Klondike always has had more men than Flagpole has. Clearly, each soldier at Klondike must have to perform a smaller share of the duties, and therefore soldiers at Klondike must have more free time than do soldiers at Flagpole.In evaluating the argument, it would be most useful to know which of the following?
112	Studies have shown that highway drivers are less likely to drive at speeds greater than the posted speed limit if houses or buildings are in some way visible from the road. Assuming similar car, road and traffic conditions, highway drivers are more likely to drive at speeds in excess of the posted speed limit if the natural surroundings are not interrupted by buildings. Psychologists hypothesize that seeing signs of civilization reminds drivers of their responsibility to the safety of their fellow humans, thus making them more likely to obey the posted speed limit. Which of the following, if true, most strongly supports the psychologists' interpretation of the study?
113	The Canadian elk has traditionally been limited in its geographic range by the presence of elderberries, its primary source of food, which only grow up until a certain point in the tundra. A recent rise in temperatures, however, has seen a spread in the growth of elderberries northwards into the tundra. Therefore, the overall range of the Canadian elk can be expected to increase. Which of the following, if true, best casts doubt on the argument?
114	In the past decade, two Motorlux models, the T-300, a sports car, and the AG-75, a sports utility vehicle, have been manufactured with the same timing belt, which controls the timing of the engines valves: when the engine is running at a higher RPM, there is more strain on the timing belt. Recent evidence indicates that this particular brand of timing belt has a usable life of about 135,000 miles, somewhat less the 200,000 miles life typical of standard timing belt. Although the same model of timing belt has been used for both models of cars, the incidence of timing belt failure is considerably higher in the AG-75 than in the T-300. This is most likely because ______________________ Which of the following, if true, most logically completes the argument?
115	A deadly virus that has claimed the lives of local villagers has been traced to the spotted fruit bat, in which the virus resides between periodic outbreaks. Biologists speculate that the bat might also be one of the reservoirs for a number of other viruses that have led to village fatalities. The local government has proposed to eliminate the spotted fruit bat by cutting off passageways that allow the bat to emerge from its caves. Once the bat is unable to emerge from the caves, the government will have achieved its objective of reducing the number of village deaths attributable to viruses. Which of the following, if true, would best indicate that the government’s plan will not lead to its objective?
116	Nearly all employees of the factory who have completed their high school diploma have earned their factory safety certificate, having easily completed the eight week training course. The high school graduates who haven't earned the certificate are ones who have evening obligations that have prevented them from taking the course. Overall, though, most of the factory workers have not earned the certificate. If the statements above are true, which one of the following also must be true?
117	Last week, an investigative journalist published an exposé in the newspaper, demonstrating that many of the shoes sold in a certain department store in California were made overseas in sweatshops that are alleged to use child labor. This week, the department store experienced a drop in shoe sales, after twelve weeks of robust sales of shoes. The management team of the department store maintains that the unfavorable article in the newspaper last week had nothing to do with their drop in shoe sales this week. Which of the following, if true, most strongly supports the management team's position?
118	Diomedes Motors has just decided to start using Rapilux Tires on most models of its new cars. The tires cost the same as the previous tires, and the change in tires will not change the sticker price of any car, nor will it change the profit on the sale of any particular car. Nevertheless, the CEO of Diomedes Motors expects this change in tires to increase Diomedes' profits in the coming year.Which of the following, if true, provides the best reason for the expectation?
119	A certain city has had many vacant homes in the downtown neighborhoods. The city loses significant tax revenue each year because those houses stand unoccupied. The city felt that the fear of crime was keeping professionals from moving into these houses. Over 80% of the city's professional work force live outside of the city, in nearby suburbs, and commute daily. Plan: Five years ago, the city tripled the size of the municipal police force, increasing patrols throughout the city. All studies have confirmed that crime has dropped substantially. Result: the vacancy rate in these single-family houses has not changed substantially in five years. Further information: Almost all of the vacant houses are in excellent condition, ready for occupancy. The city supports a number of high-paying professional jobs, and the state economy has been booming over the past five years. In light of the further information, which of the following, if true, does most to explain the result that followed the implementation of the plan?
120	Power Plant Spokesperson: "The water quality of the Phage River as it passes through Praseopolis is below federal standards. The citizens of Praseopolis often blame the poor water quality on our coal-burning power plant, which is upstream from Praseopolis. But Vulcan Refinery, along a tributary of the Phage River even further upstream, releases several toxins into the water. Moreover, over 99% of the toxic materials measured in the Phage River in the vicinity of Praseopolis are consistent with metal refining, but not with the by-products of coal combustion." In the power plant spokesperson's argument, the portion in boldface plays which of the following roles?

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