加强题-6 练习册详情

1

Automobile manufacturers defend their substitution of steel frames in cars with cheaper plastic components by claiming that consumer demand is ruled by a desire for light cars with crumple zones rather than as a result of corporate profit motives. However, if this trend were true, then carbon reinforced tubing, which is lighter than steel and stronger, would be available as an option. It is not.

Which of the following, if true, would most strengthen the argument against the automobile manufacturer's claim?

• When carbon tubing was introduced in the market place, it was not yet commercially viable to produce it in large volumes.
• Automobile companies are reluctant to invest in high volume industrial technology to produce carbon tubing until profits from the sale of small scale commercial carbon products, such as bicycle frames, have stabilized.
• Some types of carbon tubing for sports equipment are in such high demand that there is a back log of several weeks for orders.
• Because carbon tubing has entirely different chemical properties from plastic frame components, new construction techniques will be required for automobiles.
• Any valid comparison among steel, plastic and carbon frames must be based on identical performance measures.

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2

John, an expert in game theory, predicts that negotiations cannot be resolved unless one party is willing to concede a symbolic step. He also believes that when a symbolic step of concession is taken, negotiations will be resolved. Other game theory experts, however, believe that these results do not take other variables into account.

Which of the following, if true, best supports the contention in the last sentence?

• Predicting the success of a particular negotiation requires specifying the goal of the negotiation.
• Judging the outcome of a particular negotiation requires knowing about other negotiations that have taken place in the past.
• Learning whether a certain negotiation strategy is good requires observing how that strategy works through several negotiating sessions.
• Parties who are willing to take a symbolic step are more likely to complete negotiations successfully for other reasons.
• Making a negotiation successful requires knowing the context of symbolic steps that a party in the negotiations might desire.

1947人做过此题 平均耗时为5min57s 平均正确率为 51%

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3

Finance Minister: Last year was disastrous for our manufacturing sector, which has traditionally contributed about 75% of our national budget. It is therefore encouraging that there is evidence that the IT sector is growing stronger. Taxes from the IT sector accounted for 15% of our national budget, up from 8% last year.

On the basis of the statements above, what best supports the above conclusion?

• The increase in taxes from the IT sector could have merely been the result of new laws imposed on the IT sector.
• The profits of the IT sector remained at a steady level despite the fact that it paid more taxes to the national government.
• The rise in the percentage of taxes that the IT sector contributed to the national government was insignificant in actual dollar terms.
• It is difficult to determine whether the jump from 8-15% tax contribution by the IT sector will be ongoing.
• The information given above does not fairly compare the contribution of taxes paid by different industries to the national government.

959人做过此题 平均耗时为6min52s 平均正确率为 54%

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4

Several recent studies have shown that when alcohol is consumed before driving, the incidence of automobile accidents increases significantly. On this basis, the federal government has passed strict laws prohibiting drivers from operating their vehicles after consuming specific amounts of alcohol. Surprisingly, it has since been discovered that a large number of drivers who have not been consuming alcohol in amounts that exceed the legal specifications are still becoming involved in the type of automobile accidents that the laws were designed to reduce.

Which one of the following, if true, could by itself adequately explain the unexpected finding reported in the passage?

• Some people are defying the law by drinking slightly less than the legal limit of alcoholic beverages.
• People are more likely to make automobile trips under the influence of alcohol than they were before the introduction of the laws.
• The sophisticated language used in the phrasing of the laws has caused many people to misunderstand the amount of alcohol they can legally consume.
• The laws prohibiting drinking alcohol and then driving were not designed to prevent all types of accidents, so it is not surprising that some accidents still occur.
• The consumption rates specified in the laws are based on the higher tolerance rates of men aged 35-40, while the later accidents involve younger men and women.

987人做过此题 平均耗时为6min32s 平均正确率为 51%

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5

Ethanol is a derivative of corn and other grains. When burned as fuel, it emits significantly lower levels of carbon monoxide, a major atmospheric pollutant, than does gasoline. For that reason, environmentalists claim that ethanol is a better source of energy than gasoline. Which of the following, if true, most strongly supports the environmentalists' claim?

• When burned as fuel, ethanol does not release any pollutants at higher levels than does gasoline
• Ethanol is comparable in price to gasoline
• Available supplies of corn are sufficient to supply several years' worth of ethanol
• Most gasoline companies already possess the technology to produce ethanol
• Ethanol can be used as heating fuel

910人做过此题 平均耗时为3min27s 平均正确率为 73%

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6

In tests for pironoma, a serious disease, a false positive result indicates that people have pironoma when, in fact, they do not; a false negative result indicates that people do not have pironoma when, in fact, they do. To detect pironoma most accurately, physicians should use the laboratory test that has the lowest proportion of false positive results.

>Which of the following, if true, gives the most support to the recommendation above?

• The accepted treatment for pironoma does not have damaging side effects
• The laboratory test that has the lowest proportion of false positive results causes the same minor side effects as do the other laboratory tests used to detect pironoma
• In treating pironoma patients, it is essential to begin treatment as early as possible, since even a week of delay can result in loss of life.
• The proportion of inconclusive test results is equal for all laboratory tests used to detect pironoma
• All laboratory tests to detect pironoma have the same proportion of false negative results

1986人做过此题 平均耗时为5min38s 平均正确率为 48%

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7

For the first time in history, more televisions than people can be found in American households. According to recent research, the average household has 2.55 residents and contains 2.73 televisions. However, by employing such costly manufacturing processes as plasma technology and flat screens, televisions are becoming too expensive for the typical consumer. As a result, the average number of residents per household will again surpass the number of televisions.

Which of the following, if true, most strongly supports the argument above?

• House parties at which numerous individuals gather to view popular television shows on one television set have increased three hundred percent during the past year
• More than one million legal immigrants enter the United States each year
• New devices such as video-enabled personal digital assistants and music players are increasingly purchased for use as a primary source of information and entertainment
• As new technologies become more commonplace, manufacturing and retail costs normally decline
• As a result of technological advances, new televisions are increasingly enabled with some features, such as Internet browsing, traditionally associated with other household devices

1015人做过此题 平均耗时为3min50s 平均正确率为 48%

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8

The importance of the ozone layer to terrestrial animals is that it entirely filters out some wavelengths of light but lets others through. Holes in the ozone layer and the dangers associated with these holes are well documented. However, one danger that has not been given sufficient attention is that these holes could lead to severe eye damage for animals of many species.

Which one of the following is most strongly supported by the statements above, if they are true?

• All wavelengths of sunlight that can cause eye damage are filtered out by the ozone layer where it is intact
• Few species of animals live on a part of the earth's surface that is not threatened by holes in the ozone layer
• Some species of animals have eyes that will not suffer any damage when exposed to unfiltered sunlight
• A single wavelength of sunlight can cause severe damage to the eyes of most species of animals
• Some wavelengths of sunlight that cause eye damage are more likely to reach the earth's surface where there are holes in the ozone layer than where there are not

854人做过此题 平均耗时为3min28s 平均正确率为 69%

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9

The ancient city of Cephesa was not buried by an eruption of Mt. Amnos in A.D. 310, as some believe. The eruption in the year 310 damaged the city, but it did not destroy it. Cephesa survived for another century before it finally met its destruction in another eruption around A.D. 415.

Which of the following, if true, would most strengthen the author's claim that the city of Cephesa was not buried by the eruption of Mt. Amnos in A.D. 310?

• The city of Cephesa is mentioned in a historical work known to have been written in AD 400
• Coins bearing the image of an emperor who lived around AD 410 have been discovered in the ruins of Cephesa, which were preserved by the cinders and ashes that buried the city
• Geological evidence shows that the eruption of Mt Amnos in AD 415 deposited a 10-foot-thick layer of lava on the city of Cephesa
• Artworks from the city of Cephesa have been found in the ruins of another city known to have been destroyed in AD 420
• A historical work written in AD 430 refers to the eruption of Mt Amnos in AD 415

827人做过此题 平均耗时为2min59s 平均正确率为 83%

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10

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?

• The current student-teacher ratio at Vargonia's government-funded schools is higher than it was during the most recent period of economic recession
• During recent periods when the Vargonian economy has been strong, almost 25 percent of Vargonian children have attended privately funded schools, many of which charge substantial fees
• Nearly 20 percent more teachers are currently employed in Vargonia's government-funded schools than had been employed in those schools in the period before the last economic recession
• Teachers in Vargonia's government-funded schools are well paid relative to teachers in most privately funded schools in Vargonia, many of which rely heavily on part-time teachers
• During the last economic recession in Vargonia, the government permanently closed a number of the schools that it had funded

10000人做过此题 平均耗时为6min8s 平均正确率为 35%

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11

In ancient Mesopotamia, prior to 2900 B.C., wheat was cultivated in considerable quantities, but After 2900B.C., production of that grain began to decline as the production of barly increased sharply.Some historians who study ancient Mesopotamia content that the decline in wheat production was due to excessive irrigation, lack of drainage, and the consequent accumulation of salt residues in the soil.

Which one of the following, if true, most help to support the historian's contention concerning the reasons for the decline in wheat production in ancient Mesopotamia?

• The cultivation of barely requires considerably less water than does the cultivation of wheat.
• Barly has much greater resistance to the presence of salt in soil ant does wheat.
• Prior to 2900 B.C., barly was cultivated along with wheat, but the amount of barely produced was far less than the amount of wheat blights.
• Around 2900 B.C., a series of wheat blights occurred, destroying much of the wheat crop year after year.
• Literary and archaeological evidence indicates that in the period following 2900B.C., barely became the principal grain in the diet of most of the inhabitants of Mesopotamia.

1501人做过此题 平均耗时为8min24s 平均正确率为 74%

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