【GMAT考满分题库检索】GMAT逻辑CR题库_GMAT 真题

序号	题目内容
0	From 1980 to 1989, total consumption of fish in the country of Jurania increased by 4.5 percent, and total consumption of poultry products there increased by 9.0 percent. During the same period, the population of Jurania increased by 6 percent, in part due to immigration to Jurania from other countries in the region. If the statements above are true, which of the following must also be true on the basis of them?
0	Among people who experience migraine headaches, some experience what doctors call "common" migraines, whereas others experience "classical" migraines. Siblings and spouses of common migraine sufferers are themselves twice as likely as the general population to experience common migraines. Siblings of classical migraine sufferers are four times more likely than the general population to experience classical migraines, whereas spouses of classical migraine sufferers are no more likely than the general population to experience such headaches. The information above provides the most support for which of the following hypotheses?
0	The percentage of households with an annual income of more than $40,000 is higher in Merton county than in any other county. However, the percentage of households with an annual income of $60,000 or more is highest in Sommer county. If the statements above are true, which of the following can properly be concluded on the basis of them?
0	One summer, floods covered low-lying garlic fields situated in a region with a large mosquito population. Since mosquitoes lay their eggs in standing water, flooded fields would normally attract mosquitoes, yet no mosquitoes were found in the fields. Diallyl sulfide, a major component of garlic, is known to repel several species of insects, including mosquitoes, so it is likely that diallyl sulfide from the garlic repelled the mosquitoes. Which of the following, if true, most strengthens the argument?
0	以下文段中，请判断各个句子分别是前提、中间结论还是主结论。前提选P，中间结论选IC，主结论选MC Obviously, fewer sessions of gym class lead to reduced fitness. ___ Last year, when students participated in gym class on a daily basis, 85% of the school's students passed the exam. ___This year, students had gym class twice weekly, and only 70% of them passed the test. ___ The cutback in physical education is seemly the primary contributing factor to K High School's increasing failure rate on the year-end physical fitness examination. ___
0	【OG-660】Many athletes inhale pure oxygen after exercise in an attempt to increase muscular reabsorption of oxygen. Measured continuously after exercise, however, the blood lactate levels of athletes who inhale pure oxygen are practically identical, on average, to those of athletes who breathe normal air. The lower the blood lactate level is, the higher the muscular reabsorption of oxygen is. If the statements above are all true, they most strongly support which of the following conclusions? 请选择该题题型:
0	以下文段中，请判断各个句子分别是前提、中间结论还是主结论。前提选P，中间结论选IC，主结论选MC The burglar is clumsy and often makes a lot of noise while robbing homes. ___ As a result, he is more likely to get caught. ___ Thus, in the near future, he will probably end up in jail. ___
0	A program instituted by the state authority to raise money allows homeowners to prepay their property taxes at the current rate. ___ Homeowners of the state should participate in the program. ___ Even if the government were to raise the rate in a subsequent year, any prepaid taxes would allow homeowners to maintain taxes at the lower rate. ___ Consequently, this program will help people to save money in general. ___
0	很多限量球鞋的价格都在短期内暴涨， ___ 又在几个月后暴跌到低于原价。 ___ 建议大家先观望一下不要急着买， ___ 球鞋价格波动实在是太大了！ ___
0	我要去健身！ ___ 长胖后不仅之前的衣服穿不了， ___ 而且还容易得病。 ___ 减肥真的是当务之急啊！___
0	The use of radar detectors in commercial vehicles was banned because commercial truck and bus drivers were using these devices to drive faster than the posted speed limit without fear of arrest. Since drivers of noncommercial vehicles also use radar detectors and since speeding decreases safety for any vehicle, use of radar detectors should also be banned in noncommercial vehicles to increase safety. Which of the following, if true, most strongly supports the argument above?
0	In general, jobs are harder to get in times of economic recession because many businesses cut back operations. However, any future recessions in Vargonia will probably not reduce the availability of teaching jobs at government-funded schools. This is because Vargonia has just introduced a legal requirement that education in government-funded schools be available, free of charge, to all Vargonian children regardless of the state of the economy, and that current student-teacher ratios not be exceeded. Which of the following, if true, most strengthens the argument?
0	The heavy traffic in Masana is a growing drain on the city's economy--the clogging of the streets of the central business district alone cost the economy more than $1.2 billion over the past year. In order to address this problem, officials plan to introduce congestion pricing, by which drivers would pay to enter the city`s most heavily trafficked areas during the busiest times of the day. Which of the following, if true, would most strongly indicate that the plan will be a success?
0	A certain mayor has proposed a fee of five dollars per day on private vehicles entering the city, claiming that the fee will alleviate the city's traffic congestion. The mayor reasons that, since the fee will exceed the cost of round-trip bus fare from many nearby points, many people will switch from using their cars to using the bus. Which of the following statements, if true, provides the best evidence that the mayor's reasoning is flawed?
0	Until now, only injectable vaccines against influenza have been available. They have been used primarily by older adults, who are at risk for complications from influenza. A new vaccine administered in a nasal spray has proven effective in preventing influenza in children. Since children are significantly more likely than adults to contract and spread influenza, making the new vaccine widely available for children will greatly reduce the spread of influenza across the population. Which of the following, if true, most strengthens the argument?
0	Although exposure to asbestos is the primary cause of mesothelioma, a slow-developing cancer, researchers believe that infection by the SV40 virus is a contributing cause, since in the United States 60 percent of tissue samples from mesotheliomas, but none from healthy tissue, contain SV40. SV40 is a monkey virus; however, in 1960 some polio vaccine was contaminated with the virus. Researchers hypothesize that this vaccine was the source of the virus found in mesotheliomas decades later. Which of the following, if true, most strongly supports the researchers' hypothesis?
0	In January of last year the Moviemania chain of movie theaters started propping its popcorn in canola oil, instead of the less healthful coconut oil that it had been using until then. Now Moviemania is planning to switch back, saying that the change has hurt popcorn sales. That claim is false, however, since according to Moviemania's own sales figures, Moviemania sold 5 percent more popcorn last year than in the previous year. Which of the following, if true, most strongly supports the argument against Moviemania's claim?
0	Offshore oil-drilling operations entail an unavoidable risk of an oil spill, but importing oil on tankers presently entails an even greater such risk per barrel of oil. Therefore, if we are to reduce the risk of an oil spill without curtailing our use of oil, we must invest more in offshore operations and import less oil on tankers. Which of the following, if true, most seriously weakens the argument above?
0	Researchers took a group of teenagers who had never smoked and for one year tracked whether they took up smoking and how their mental health changed. Those who began smoking within a month of the study's start were four times as likely to be depressed at the study's end than those who did not begin smoking. Since nicotine in cigarettes changes brain chemistry, perhaps thereby affecting mood, it is likely that smoking contributes to depression in teenagers. Which of the following, if true, most strengthens the argument?
0	Sascha: The attempt to ban parliament's right to pass directed-spending bills-bills that contain provisions specifically funding the favorite projects of some powerful politicians-is antidemocratic. Our nation's constitution requires that money be drawn from our treasury only when so stipulated by laws passed by parliament, the branch of government most directly representative of the citizens. This requirement is based on the belief that exercising the power to spend public resources involves the ultimate exercise of state authority and that therefore _________.Which of the following most logically completes Sascha's argument?

序号

题目内容

From 1980 to 1989, total consumption of fish in the country of Jurania increased by 4.5 percent, and total consumption of poultry products there increased by 9.0 percent. During the same period, the population of Jurania increased by 6 percent, in part due to immigration to Jurania from other countries in the region. If the statements above are true, which of the following must also be true on the basis of them?

Among people who experience migraine headaches, some experience what doctors call "common" migraines, whereas others experience "classical" migraines. Siblings and spouses of common migraine sufferers are themselves twice as likely as the general population to experience common migraines. Siblings of classical migraine sufferers are four times more likely than the general population to experience classical migraines, whereas spouses of classical migraine sufferers are no more likely than the general population to experience such headaches. The information above provides the most support for which of the following hypotheses?

The percentage of households with an annual income of more than $40,000 is higher in Merton county than in any other county. However, the percentage of households with an annual income of $60,000 or more is highest in Sommer county. If the statements above are true, which of the following can properly be concluded on the basis of them?

One summer, floods covered low-lying garlic fields situated in a region with a large mosquito population. Since mosquitoes lay their eggs in standing water, flooded fields would normally attract mosquitoes, yet no mosquitoes were found in the fields. Diallyl sulfide, a major component of garlic, is known to repel several species of insects, including mosquitoes, so it is likely that diallyl sulfide from the garlic repelled the mosquitoes. Which of the following, if true, most strengthens the argument?

以下文段中，请判断各个句子分别是前提、中间结论还是主结论。前提选P，中间结论选IC，主结论选MC Obviously, fewer sessions of gym class lead to reduced fitness. ___ Last year, when students participated in gym class on a daily basis, 85% of the school's students passed the exam. ___This year, students had gym class twice weekly, and only 70% of them passed the test. ___ The cutback in physical education is seemly the primary contributing factor to K High School's increasing failure rate on the year-end physical fitness examination. ___

【OG-660】Many athletes inhale pure oxygen after exercise in an attempt to increase muscular reabsorption of oxygen. Measured continuously after exercise, however, the blood lactate levels of athletes who inhale pure oxygen are practically identical, on average, to those of athletes who breathe normal air. The lower the blood lactate level is, the higher the muscular reabsorption of oxygen is. If the statements above are all true, they most strongly support which of the following conclusions? 请选择该题题型:

以下文段中，请判断各个句子分别是前提、中间结论还是主结论。前提选P，中间结论选IC，主结论选MC The burglar is clumsy and often makes a lot of noise while robbing homes. ___ As a result, he is more likely to get caught. ___ Thus, in the near future, he will probably end up in jail. ___

A program instituted by the state authority to raise money allows homeowners to prepay their property taxes at the current rate. ___ Homeowners of the state should participate in the program. ___ Even if the government were to raise the rate in a subsequent year, any prepaid taxes would allow homeowners to maintain taxes at the lower rate. ___ Consequently, this program will help people to save money in general. ___

很多限量球鞋的价格都在短期内暴涨， ___ 又在几个月后暴跌到低于原价。 ___ 建议大家先观望一下不要急着买， ___ 球鞋价格波动实在是太大了！ ___

我要去健身！ ___ 长胖后不仅之前的衣服穿不了， ___ 而且还容易得病。 ___ 减肥真的是当务之急啊！___