CR-OG20：第31-45题 练习册详情

1

Beginning in 1966 all new cars sold in Morodia were required to have safety belts and power steering. Previously, most cars in Morodia were without these features. Safety belts help to prevent injuries in collisions, and power steering helps to avoid collisions in the first place. But even though in 1966 one-seventh of the cars in Morodia were replaced with new cars, the number of car collisions and collision-related injuries did not decline.

Which of the following, if true about Morodia, most helps to explain why the number of collisions and collision-related injuries in Morodia failed to decline in 1966?

• Because of a driver-education campaign, most drivers and passengers in cars that did have safety belts used them in 1966.
• Most of the new cars bought in 1966 were bought in the months of January and February.
• In 1965, subtantially more than one- seventh of the cars in Morodia were replaced with new cars.
• An excessive reliance on the new safety features led many owners of new cars to drive less cautiously in 1966 than before.
• The seat belts and power steering put into new cars sold in 1966 had to undergo strict quality- control inspections by manufacturers, whether the cars were manufactured in Morodia or not.

9974人做过此题 平均耗时为15min4s 平均正确率为 51%

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2

Enterprise Bank currently requires customers with checking accounts to maintain a minimum balance or pay a monthly fee. Enterprise plans to offer accounts with no monthly fee and no minimum-balance requirement; to cover their projected administrative costs of $3 per account per month they plan to charge $30 for overdrawing an account. Since each month on average slightly more than 10 percent of Enterprises customers overdraw their accounts, bank officials predict the new accounts will generate a profit. Which of the following, if true, most strongly supports the bank officials prediction?

• Some of Enterprise Bank's current checking account customers are expected to switch to the new accounts once they are offered.
• One third of Enterprise Banks revenues are currently derived from monthly fees tied to checking accounts.
• Many checking account customers who occasionally pay a fee for not maintaining a minimum balance in their account generally maintain a balance well above the minimum.
• Customers whose checking accounts do not have a minimum-balance requirement are more likely than others to overdraw their checking accounts .
• Customers whose checking accounts do not have a minimum-balance requirement are more likely than others to write checks for small amounts .

9996人做过此题 平均耗时为30min15s 平均正确率为 69%

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3

In virtually any industry, technological improvements increase labor productivity, which is the output of goods and services per person-hour worked. In Parland's industries, labor productivity is significantly higher than it is in Vergia's industries. Clearly, therefore, Parland's industries must, on the whole, be further advanced technologically than Vergia's are.

The argument is most vulnerable to which of the following criticisms?

• It offers a conclusion that is no more than a paraphrase of one of the pieces of information provided in its support.
• It presents as evidence in support of claim information that is inconsistent with other evidence presented in support of the same claim
• It takes one possible cause of a condition to be the actual cause of that condition without considering any other possible causes.
• It takes a condition to be the effect of something that happened only after the condition already existed.
• It makes a distinction that presupposes the truth of the conclusion that is to be established

9964人做过此题 平均耗时为5min27s 平均正确率为 41%

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4

Chaco Canyon, a settlement of the ancient Anasazi culture in North America, had massive buildings. It must have been a major Anasazi center. Analysis of wood samples shows that some of the timber for the buildings came from the Chuska and San Mateo mountains, 50 miles from Chaco Canyon. Only a major cultural center would have the organizational power to import timber from 50 miles away.

In the argument given, the two portions in boldface play which of the following roles?

• The first is a premise used to support the argument's main conclusion; the second is the argument 's main conclusion.
• The first is the argument's main conclusion; the second is a premise used to support that conclusion.
• The first is one of two premises used to support the argument's main conclusion; the second is the other of those two premises.
• The first is a premise used to support the argument's main conclusion; the second is a premise used to support another conclusion drawn in the argument.
• The first is inferred from another statement in the argument; the second is inferred from the first.

9978人做过此题 平均耗时为13min5s 平均正确率为 66%

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5

The Maxilux car company's design for its new luxury model, the Max 100, included a special design for the tires that was intended to complement the model's image. The winning bid for supplying these tires was submitted by Rubco. Analysts concluded that the bid would only just cover Rubco's costs on the tires, but Rubco executives claim that winning the bid will actually make a profit for the company.

Which of the following, if true, most strongly justifies the claim made by Rubco's executives?

• In any Maxilux model, the spare tire is exactly the same make and model as the tires that are mounted on the wheels.
• Rubco holds exclusive contracts to supply Maxilux with the tires for a number of other models made by Maxilux.
• The production facilities for the Max 100 and those for the tires to be supplied by Rubco are located very near each other.
• When people who have purchased a carefully designed luxury automobile need to replace a worn part of it, they almost invariably replace it with a part of exactly the same make and type.
• When Maxilux awarded the tire contract to Rubco, the only criterion on which Rubco's bid was clearly ahead of its competitors' bids was price.

9980人做过此题 平均耗时为10min11s 平均正确率为 55%

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6

Which of the following most logically completes the passage?

Most bicycle helmets provide good protection for the top and back of the head, but little or no protection for the temple regions on the sides of the head. A study of head injuries resulting from bicycle accidents showed that a large proportion were caused by blows to the temple area. Therefore, if bicycle helmets protected this area, the risk of serious head injury in bicycle accidents would be greatly reduced especially since _________.

• among the bicyclists included in the study's sample of head injuries, only a very small proportion had been wearing a helmet at the time of their accident
• even those bicyclists who regularly wear helmets have a poor understanding of the degree and kind of protection that helmets afford
• a helmet that included protection for the temples would have to be somewhat larger and heavier than current helmets
• the bone in the temple area is relatively thin and impacts in that area are thus very likely to cause brain injury
• bicyclists generally land on their arm or shoulder when they fall to the side, which reduces the likelihood of severe impacts on the side of the head

9956人做过此题 平均耗时为10min15s 平均正确率为 58%

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7

Which of the following most logically completes the argument?

In a typical year, Innovair's airplanes are involved in 35 collisions while parked or being towed in airports, with a resulting yearly cost of $1,000,000 for repairs.

To reduce the frequency of ground collisions, Innovair will begin giving its ground crews additional training, at an annual cost of $500,000. Although this will cut the number of ground collisions by about half at best, the drop in repair costs can be expected to be much greater, since ______ .

• most ground collisions happen when ground crews are rushing to minimize the time a delayed plane spends on the ground
• a ground collision typically occurs when there are no passengers on the airplane
• the additional training will focus on helping ground crews avoid those kinds of ground collisions that cause the most costly damage
• the $500,000 cost figure for the additional training of ground crews includes the wages that those crews will earn during the time spent in actual training
• most ground collisions have been caused by the least experienced ground-crew members

9997人做过此题 平均耗时为21min42s 平均正确率为 61%

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8

Many agriculturally intensive areas of the world are beginning to encounter water scarcity problems. As a result, many farmers in these areas are likely to reduce their output as the water supply they need in order to maintain production shrinks. However, one group of farmers in such a region plans to increase their production by implementing techniques for water conservation.

Which of the following, if true, would most strongly support the prediction that the group's plan will succeed?

• Farmers who can gain a larger share of the food market in their regions will be better positioned to control more water resources.
• Most agricultural practices in areas with water shortages are waterintensive.
• Other regions of the world not facing water shortages are likely to make up for the reduction in agricultural output.
• Demand for agricultural products in the group's region is not expected to decline.
• More than half the water used for agriculture in the farmers' region is lost to evaporation or leakage from irrigation channels.

9973人做过此题 平均耗时为20min36s 平均正确率为 64%

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9

Hollywood restaurant is replacing some of its standard tables with tall tables and stools. The restaurant already fills every available seat during its operating hours, and the change in seating arrangements will not result in an increase in the restaurant's seating capacity. Nonetheless, the restaurant's management expects revenue to increase as a result of the seating change without any concurrent change in menu, prices or operating hours.

Which of the following, if true, provides the best reason for the expectation?

• One of the taller tables takes up less floor space than one of the standard tables.
• Diners seated on stools typically do not linger over dinner as long as diners seated at standard tables.
• Since the restaurant will replace only some of its standard tables, it can continue to accommodate customers who do not care for the taller tables.
• Few diners are likely to avoid the restaurant because of the new seating arrangement.
• The standard tables being replaced by tall tables would otherwise have to be replaced with new standard tables at a greater expense.

9953人做过此题 平均耗时为11min1s 平均正确率为 66%

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10

A major network news organization experienced a drop in viewership in the week following the airing of a controversial report on the economy. The network also received a very large number of complaints regarding the report. The network, however, maintains that negative reactions to the report had nothing to do with its loss of viewers.

Which of the following, if true, most strongly supports the network's position?

• The other major network news organizations reported similar reductions in viewership during the same week.
• The viewers who registered complaints with the network were regular viewers of the news organization's programs.
• Major network news organizations publicly attribute drops in viewership to their own reports only when they receive complaints about those reports.
• This was not the first time that this network news organization has aired a controversial report on the economy that has inspired viewers to complain to the network.
• Most network news viewers rely on network news broadcasts as their primary source of information regarding the economy.

9972人做过此题 平均耗时为13min6s 平均正确率为 53%

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11

Only a reduction of 10 percent in the number of scheduled flights using Greentown's airport will allow the delays that are so common there to be avoided. Hevelia airstrip, 40 miles away, would, if upgraded and expanded, be an attractive alternative for fully 20 percent of the passengers using Greentown airport. Nevertheless, experts reject the claim that turning Hevelia into a full-service airport would end the chronic delays at Greentown.

Which of the following, if true, most helps to justify experts' position?

• Turning Hevelia into a full-service airport would require not only substantial construction at the airport itself, but also the construction of new access highways.
• A second largely undeveloped airstrip close to Greentown airport would be a more attractive alternative than Hevelia for many passengers who now use Greentown.
• Hevelia airstrip lies in a relatively undeveloped area but would, if it became a full-service airport, be a magnet for commercial and residential development.
• If an airplane has to wait to land, the extra jet fuel required adds significantly to the airline's costs.
• Several airlines use Greentown as a regional hub, so that most flights landing at Greentown have many passengers who then take different flights to reach their final destinations.

9966人做过此题 平均耗时为10min8s 平均正确率为 45%

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12

Farmer: Worldwide, just three grain crops-rice, wheat, and corn-account for most human caloric intake. To maintain this level of caloric intake and also keep pace with global population growth, yields per acre from each of these crops will have to increase at least 1.5 percent every year, given that the supply of cultivated land is diminishing. Therefore, the government should increase funding for research into new ways to improve yields

Which of the following is an assumption on which the farmers argument depends?

• It is solely the governments responsibility to ensure that the amount of rice wheat, and corn produced worldwide keeps pace with global population growth
• Increasing government funding for research into new ways to improve the yields per acre of rice, wheat, and corn crops would help to increase total worldwide annual production of food from these crops
• Increasing the yields per acre of rice, wheat, and corn is more important than increasing the yields per acre of other crops
• Current levels of funding for research into ways of improving grain crop yields per acre have enabled grain crop yields per acre to increase by more than 1.5 percent per year worldwide
• In coming decades, rice, wheat, and corn will become a minor part of human caloric intake, unless there is government-funded research to increase their yields per acre

9997人做过此题 平均耗时为27min12s 平均正确率为 68%

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13

The air quality board recently informed Coffee Roast, a small coffee roasting firm, of a complaint regarding the smoke from its roaster. Recently enacted air quality regulations requires machine roasting more than 10 pounds of coffee to be equipped with expensive smoke-dissipating afterburners. The firm, however, roasts only 8 pounds of coffee at a time. Nevertheless, the company has decided to purchase and install an afterburner.

Which of the following, if true, most strongly supports the firm's decision?

• Until setting on the new air quality regulations, the board had debated whether to require afterburners for machines roasting more than 5 pounds of coffee at a time.
• Coffee roasted in a machine equipped with an afterburner has its flavor subtly altered.
• The cost to the firm of an afterburner is less than the cost of replacing its roaster with a smaller one.
• Fewer complaints are reported in areas that maintain strict rules regarding afterburners.
• The firm has reason to fear that negative publicity regarding the complaints could result in lost sales.

9967人做过此题 平均耗时为25min9s 平均正确率为 47%

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14

People who do regular volunteer work tend to live longer, on average, than people who do not. It has been found that “doing good,” a category that certainly includes volunteer work, releases endorphins, the brain's natural opiates, which induce in people a feeling of well-being. Clearly, there is a connection: Regular releases of endorphins must in some way help to extend people's lives.

Which of the following, if true, most seriously undermines the force of the evidence given as support for the hypothesis that endorphins promote longevity?

• People who do regular volunteer work are only somewhat more likely than others to characterize the work they do for a living as “doing good.”
• Although extremely high levels of endorphins could be harmful to health, such levels are never reached as a result of the natural release of endorphins.
• There are many people who have done some volunteer work but who do not do such work regularly.
• People tend not to become involved in regular volunteer work unless they are healthy and energetic to begin with.
• Releases of endorphins are responsible for the sense of well-being experienced by many long-distance runners while running.

9981人做过此题 平均耗时为23min30s 平均正确率为 51%

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15

A study compared a sample of Swedish people older than 75 who needed in-home assistance with a similar sample of Israel people. The people in the two samples received both informal assistance, provided by family and friends, and formal assistance, professionally provided. Although Sweden and Israel have equally well-funded and comprehensive systems for providing formal assistance, the study found that the people in the Swedish sample received more formal assistance, on average, than those in the Israeli sample.

Which of the following, if true, does most to explain the difference that the study?

• A companion study found that among children needing special inhome care ,the amount of formal assistance they received was roughly the same in Sweden as in Israel.
• More Swedish than Israeli people older than 75 live in rural areas where formal assistance services are sparse or nonexistent.
• Although in both Sweden and Israel much of the funding for formal assistance ultimately comes from the central government, the local structures through which assistance is delivered are different in the two countries
• In recent decades, the increase in life expectancy of someone who is 75 years old has been greater in Israel than in Sweden.
• In Israel, people older than 75 tend to live with their children, whereas in Sweden people of that age tend to live alone.

9885人做过此题 平均耗时为38min57s 平均正确率为 42%

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