【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
61	The Green Peas Grocery Store in the remote wealthy enclave of Luxville charges more than the Green Peas Grocery Store in Oak City charges for the same items. Clearly, on any given item, the Green Peas grocery franchise is taking advantage of its location in Luxville to reap higher profits on that item.In evaluating the argument, it would be most useful to compare
62	The number of Tundra swan in an arctic refuge has been steadily dwindling. It has been determined that the majority of the birds have died from lead poisoning, which is contained in the buckshot that hunters use to kill the swan. Local authorities have responded by banning hunting, and the number of hunters cited has since dropped dramatically, yet the number of birds that continue to die each month from lead poisoning has not changed.Which of the following, if true, best resolves the discrepancy above?
63	According to the Federal Veterans Administration (VA), a certain county has a relatively high proportion of veterans among its residents, and over the past decade, these veterans have reported a number of health concerns that have not been adequately addressed. The VA does not have its own hospital in this county. Plan: For the past 5 years, the VA has earmarked several million dollars to pay all 18 hospitals in this county to fund short-term and long-term care for veterans. Result: Over the past 5 years, VA surveys have indicated no significant decrease in the number of veterans who say they have health concerns that have not been adequately addressed. Further information: VA surveys indicate that all veterans are aware of the VA funds that would cover their expenses at county hospitals. Veterans in this county span a variety of ages and a variety of health conditions. 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?
64	Scientist: There is a finite amount of helium, which is a key component of MRI magnets, in the world. Because the supply is not renewable, it is frivolous to waste this precious resource on such products as party balloons. Instead, we should use other gases, such as hydrogen, to fill balloons, and the price of helium should be raised significantly to make it prohibitive for such trivial purposes.Which of the following, if true, provides the strongest support for the suggestion that the price of helium should be raised?
65	The average size of marine life that washes up on the shore of the Japanese island Ryukyu is smaller than the average size that washes up on the Western coast of Australia. Giant squid have recently been found washed up on the shores of Ryukyu as well as the Western coast of Australia. It can be concluded that the average size of the giant squids on the shore Ryukyu must be less than that of giant squids washed up on the shores of Western Australia. The argument above can be attacked on the grounds that it does which of the following?
66	In a certain factory, the union membership was higher in 2010 than in 2008. For the period from 2007 to 2011, the percentage of factory workers that were members of the union remained constant. The statements above, if true, most strongly support which conclusion?
67	The Interstate Bridge over the Apache River, built in the 1950s, shows a substantial amount of rust: as much as 45% of its surface is coated in rust. Community activists have argued that the bridge presents a hazard: it is likely to collapse in places where it has rusted through. Professors of mechanical engineering at the local university did an extensive analysis of the bridge. These professors and their graduate students determined that 98% of the rust on the bridge exists on the surface only, and actually seals the underlying steel from the corrosive influence of the elements. The results of this academic study suggest that the bridge is safe for continued use. In the argument given, the two portions in boldface play which of the following roles?
68	The National Farm Administration (NFA) has been concerned over the last decade with the struggles of barley growers. Plan: In an effort to support these barley growers, two years ago, the NFA began a program of sending them, each autumn, a free special mix of fertilizer and enzymes designed to multiply barley yield, to be applied the following spring during first growth. This mix had been stunningly successful in multiplying the yield of barley in laboratory conditions. Results: Most barley growers reported little change in their economic status over this two year period. Further information: All barley growers received the shipments, and all used them. Weather conditions have been fair to optimal for barley growth over the past two 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?
69	Two investigative journalists have raised the question whether the new blood pressure drug, Transerythropaxil, has sensitized patients to develop fish allergies. The study was published last month in a major newspaper, and has been picked up by media throughout the country. Lab data has long shown that Transerythropaxil reacts strongly with Eicosapentaenoic acid, found in abundance in fish oil, and this reaction can produce biological irritants. Despite strenuous objections from Transerythropaxil's manufacturer, scientists working in federal labs have just published papers that provide conclusive evidence to the journalists' claim. In the argument given, the two portions in boldface play which of the following roles?
70	The price of the SuperPixel high definition television, by Lux Electronics, has typically been out of the range of most consumers, a few of whom nonetheless save up for the television. This past July, the SuperPixel reduced its price by 40%, and sales during that month nearly tripled. TechWare, a popular electronics magazine, claims that the SuperPixel television should continue to see sales grow at this rate till the end of August. Which of the following suggests that TechWare’s forecast is misguided?
71	McCray's Dairy Industries stands to reap tremendous profits in the coming year. The new milking apparatus and packing equipment purchased and installed last year allows McCray's to produce the same quantity of dairy products at less than one third of the previous cost. Restaurants and academic institutions throughout the state will choose to purchase all their dairy products from McCray's, because they will be available at a much lower cost than similar products from rival producers. The argument above assumes which of the following?
72	The Dvorak keyboard requires less finger movement than the ubiquitous QWERTY keyboard. As a result, Dvorak keyboard users are not only able to type more words per minute, but are also less vulnerable to both repetitive stress disorder and carpal tunnel syndrome. Nonetheless, businesses, as well as consumers, have not adopted the Dvorak keyboard. Clearly, if the Dvorak keyboard is to become more widely used, its benefits must be more widely touted. Which of the following, if true, casts the most doubt on the author’s conclusion?
73	An unknown simian virus recently killed off nearly half the human population of a remote jungle town. Because the disease spread at an alarming rate—victims usually exhibited signs within 8 hours of exposure, and many died within 36 hours—the simian virus, if an outbreak occurs again, is likely to cause more deaths than has any other previous virus. Which of the following pieces of information most effectively calls into question the validity of the conclusion?
74	State politicians are optimistic that the state's economic downturn will not be as severe as had been predicted. Their hopes are bolstered by the data released last week: the jobless rate declined two full percentage points in the last six months. But, many economists have pointed out the flight of unemployed residents to the bordering states where jobs are plentiful. Furthermore, many out of work residents have been rehired at minimum wage: virtually all new jobs in the state in the past year have been minimum wage jobs. Economists cast grave doubts on the economic well-being of the state. In the argument given, the two portions in boldface play which of the following roles?
75	Bankruptcy is a process that depends on a variety of structural, fiscal, and human variables. These variables are different at every company. Therefore, the pattern of companies declaring bankruptcy should be random. Yet tax records from 2010 demonstrate a pattern: a large number of companies throughout the United States declared bankruptcy at the same time.Which of the following, if true, forms the best basis for at least a partial explanation for the pattern of bankruptcy shown by the tax records?
76	A company that invests the necessary infrastructure in a large untapped diamond mine can reap as much as 700% profit in the first year. Some of the largest untapped diamond mines in the world are in the nation of Shagoca. Therefore, the American company that brokers a deal in the capital Conkin that allows it to put the necessary infrastructure in place at those mines stands to reap tremendous profits. Which of the following, if true, most helps to explain why American companies are not eager to invest in infrastructure necessarily for diamond mining in Shagoca?
77	Oceanologist: Recently an unprecedented number of dead dolphins washed ashore along the mid-Atlantic coast. In the blood of over half of the dolphins, marine biologists discovered a brevotoxin that had been emitted by the alga Ptychodiscus brevis, in what is known as a red tide. Additionally, polychlorinated biphenyls (PCB), a toxic industrial compound, was also found in the dolphin’s blood. A reasonable conclusion, and indeed one many have drawn, is that the dolphins were simply victims of the brevotoxin. Nonetheless, brevotoxins, by themselves, are not lethal to dolphins, though they do tax the dolphins system. Furthermore, most dolphins have some accumulated brevotoxins in their blood without suffering any ill health effects. Therefore, the brevotoxins alone cannot explain the mass beaching of dead dolphins. Which of the following, if true, does most to help explain the oceanologist’s doubt that the brevotoxins were the primary cause of the dolphins washing upon shore?
78	Federal investigators, called in at the request of the management of Ploutos National Bank, recently apprehended a ring of seven embezzlers from among the bank's employees. The bank management decided to call in the federal investigators when they were unable to account for millions of dollars missing in their budget for this year. All the funds those seven individuals embezzled have been returned to the bank, and that accounts for about two thirds of the total amount missing. All seven of the accused have plea-bargained to avoid trial and are now serving in prison on reduced sentences.Which of following conclusions can most properly be drawn from the information above?
79	Two years ago, the human resources department at Harrison's Technologies had 175 sexual harassment cases open, a number that at that time led all companies in the sector. At that time, a typical claim took six months to process and clear. In response to this high number, the CEO's Advisory Team published a comprehensive set of guidelines for training employees in the identification and avoidance of behaviors that could constitute sexual harassment. At this writing, the human resources department has only sixty sexual harassment cases open. Clearly, the guidelines published by the CEO's Advisory Team were effective in reducing the occurrence of new sexual harassment claims at Harrison's Technologies. Which of the following, if true, most seriously weakens the conclusion above?
80	More than 80% of the executives in the county attended high school in the county, and clearly they represent some of the brightest in the county. Among the seventeen high schools in the county, the three in the coastal towns have had the highest test scores in the county for several decades. A recent study shows that almost all of the county executives who attended high school in the county attended one of those three high schools in the coastal towns. The argument above is most vulnerable to criticism on which grounds?

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