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题目：

Which of the following most logically completes the passage?

Mastitis is an infection of the udder in cows that, although not dangerous, causes them to give poor-quality milk. Most cases of mastitis are caused by the bacterium Staphylococcus aureus, against which antibiotics are ineffective. However, a related bacterium, Staphylococcus simulans, quickly clears up even severe infections of S. aureus simply by displacing the bacteria. S. simulans is nevertheless unlikely to become the preferred treatment for cases of mastitis, since ______.

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题目：

A survey of entrepreneurs who started companies last year shows that while virtually all did substantial preparatory research and planning, only half used that work to produce a formal business plan. Since, on average, the entrepreneurs without formal plans secured the capital they needed in half the time of those with plans, these survey results indicate that, in general, formal plans did not help the entrepreneurs who produced them to secure the capital they needed.

Which of the following, if true, most seriously weakens the argument?

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One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream. Accordingly, entrepreneurs have begun selling at gymnasiums and health clubs bottles of drinking water, labeled "SuperOXY," that has extra oxygen dissolved in the water. Such water would be useless in improving physical performance, however, since the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs.

Which of the following, if true, would serve the same function in the argument as the statement in boldface?

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A manufacturer of workstations for computer-aided design seeks to increase sales to its most important corporate customers. Its strategy is to publish very low list prices for workstations in order to generate interest among the buyers for those corporations.

Which of the following, if characteristic of the marketplace, would tend to cause the manufacturer's strategy to fail?

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In two months, the legal minimum wage in the country of Kirlandia will increase from five Kirlandic dollars(KD5.00) Per hour to KD5.50 per hour. Opponents of this increase have argued that the resulting rise in wages will drive the inflation rate up. In fact its impact on wages will probably be negligible, since only a very small proportion of all Kirfandic workers are currently receiving less than KD5.50 per hour.

Which of the following, if true, most seriously weakens the argument?

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Mel: The official salary for judges has always been too low to attract the best candidates to the job. The legislature's move to raise the salary has done nothing to improve the situation, because it was coupled with a ban on receiving money for lectures and teaching engagements.

Pat: No, the raise in salary really does improve the situation. Since very few judges teach or give lectures, the ban will have little or no negative effect.

Pat's response to Mel is inadequate in that it

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题目： Scientists propose placing seismic stations on the floor of the Pacific Ocean to warn threatened coastal communities on the northwestern coast of the United States of approaching tidal waves caused by earthquakes. Since forewarned communities could take steps to evacuate, many of the injuries and deaths that would otherwise occur could be avoided if the government would implement this proposal.The answer to which of the following questions would be most important in determining whether implementing the proposal would be likely to achieve the desired result?

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题目： What was the price at which a merchant sold a certain appliance?(1)The merchant's gross profit on the appliance was 20 percent of the price at which the merchant sold the appliance.(2)The price at which the merchant sold the appliance was $50 more than the merchant's cost of the appliance.

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题目： The figure above shows the circular cross section of a concrete water pipe. If the inside radius of the pipe is r feet and the outside radius of the pipe is t feet, what is the value of r ?(1)The ratio of t - r to r is 0.15 and t - r is equal to 0.3 foot.(2)The area of the concrete in the cross section is 1.29π square feet.

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题目： If r is represented by the decimal 0.t5, what is the digit t?(1)$$r<\frac{1}{3}$$(2)$$r<\frac{1}{10}$$

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题目： If a total of 84 students are enrolled in two sections of a calculus course, how many of the 84 students are female?(1)$$\frac{2}{3}$$ of the students in Section 1 are female.(2)$$\frac{1}{2}$$ of the students in Section 2 are male.

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题目： For a convention, a hotel charges a daily room rate of $120 for 1 person and x dollars for each additional person. What is the charge for each additional person?(1)The daily cost per person for 4 people sharing the cost of a room equally is $45.(2)The daily cost per person for 2 people sharing the cost of a room equallyis$25 more than the corresponding cost for 4 people.

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题目： If n and t are positive integers, is n a factor of t?(1)$$n=3^{n-2}$$(2)$$t=3^{n}$$

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题目： Committee X and Committee Y, which have no common members, will combine to form Committee Z. Does Committee X have more members than Committee Y ?(1)The average (arithmetic mean) age of the members of Committee X is 25.7 years and the average age of the members of Committee Y is 29.3 years.(2)The average (arithmetic mean) age of the members of Committee Z will be 26.6 years.

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题目： The figure above shows the number of meters in the lengths of the four sides of a jogging path. What is the total distance around the path?(1)One of the sides of the path is 120 meters long.(2)One of the sides of the path is twice as long as each of the two shortest sides.