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The contingency-fee system, which allows lawyers and their clients to agree that the lawyer will be paid only in the event of success, does not increase the number of medical malpractice lawsuits brought against doctors. As attorneys must cover the costs for their time and research, they want to be assured that any medical malpractice case they accept on a contingency-fee basis has substantial merit. Consequently, attorneys turn away many people who come to see them, for lack of a good case.

The argument above is most vulnerable to criticism on the grounds that it fails to

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Shirla: In figure skating competitions that allow amateur and professional skaters to compete against each other, the professionals are bound to have an unfair advantage. After all, most of them became professional only after success on the amateur circuit.

Ron: But that means that it's been a long time since they've had to meet the more rigorous technical standards of the amateur circuit.

Which of the following is most likely a point at issue between Shirla and Ron?

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Recent observations suggest that small, earthlike worlds form a very low percentage of the planets orbiting stars in the galaxy other than the sun. Of over two hundred planets that astronomers have detected around other stars, almost all are hundreds of times larger and heavier than the earth and orbit stars much smaller than the sun.

Which of the following, if true, would most weaken the above justification of the claim that earthlike worlds form a low percentage of the total number of planets?

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Researchers in City X recently discovered low levels of several pharmaceutical drugs in public drinking water supplies. However, the researchers argued that the drugs in the water were not a significant public health hazard. They pointed out that the drug levels were so low that they could only be detected with the most recent technology, which suggested that the drugs may have already been present in the drinking water for decades, even though they have never had any discernible health effects.

Which of the following, if true, would most strengthen the researchers' reasoning?

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题目： According to the "conventional view" referred to in line 13 of the passage, brighter carotenoid-based coloration in certain species suggests that an individual

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题目： Which of the following can be inferred from the passage about the effect of the solar-day cycle on the tide-associated periodic behavior displayed by commuter diatoms?

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题目： According to the passage, each of the following is characteristic of the tide-associated periodic behavior of commuter diatoms EXCEPT:

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题目： Executives at the Fizzles Beverage Company plan to boost profits in Country X on their range of fruit-flavored drinks by introducing new flavors based on tropical fruits that are little known there.The executives reason that since the fruit drinks of other companies have none of these flavors, Fizzles will not have to compete for customers and thus will be able to sell the drinks at a higher price. Which of the following, if true, presents the most serious potential weakness of the plan?

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题目： A company that manufactures plastic products from recyclable plastic is, surprisingly,unconcerned that economic conditions may worsen, despite analysts' belief that consumers would then consider ecofriendly plastic products an expensive luxury. But the company reasons that it will be able to lower its prices because,in a weakenedeconomy,other ecofriendly plastic manufacturers are likely to fail.Demand among manufacturers for recyclable plastics as raw materials would then plummet, creating an oversupply of such materials,making them less expensive for the manufacturer to purchase and thus lowering the company's costs. Which of the following, if true,most weakens the company's reasoning?

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题目： Is the point Q on the circle with center C ? 1.R is a point on the circle and the distance from Q to R is equal to the distance from Q to C. 2.S is a point on the circle and the distance from Q to S is equal to the distance from S to C.

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题目： In the figure above, if A, B, and C are the areas, respectively, of the three nonoverlapping regions formed by the intersection of two circles of equal area, what is the value of B + C ? 1.$$A + 2B + C = 24$$ 2.$$A + C = 18$$ and $$B = 3$$

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题目： Is quadrilateral PQRS a parallelogram? 1.Adjacent sides PQ and QR have the same length. 2.Adjacent sides RS and SP have the same length.

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题目： In the figure above, the vertices of ∆OPQ and ∆QRS have coordinates as indicated. Do ∆OPQ and ∆QRS have equal areas? 1.b = 2a 2.d = 2c

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题目： After the first two terms in a sequence of numbers, each term in the sequence is formed by adding all of the preceding terms. Is 12 the fifth term in the sequence? 1.The sum of the first 3 terms in the sequence is 6. 2.The fourth term in the sequence is 6.

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题目： Jones has worked at Firm X twice as many years as Green, and Green has worked at Firm X four years longer than Smith. How many years has Green worked at Firm X ? 1.Jones has worked at Firm X 9 years longer than Smith. 2.Green has worked at Firm X 5 years less than Jones.