winterschool
Q1. The owner of a four-storey commercial building discovered termites in the building’s first and second floors and called an exterminator. The exterminator pumped gas directly into the walls on both the first and second floors. Due to the exterminator’s work, the termites on those floors were killed quickly. Which of the following, if true, most seriously undermines the validity of the explanation for the speed with which the termites were killed? (A) The third floor had no termite infestation (B) Even though the exterminator did not pump gas into the walls of the fourth story, the termites there died as quickly as they did on the first and second stories. (C) The speed with which termites are killed increases as the concentration of exterminator’s gas increases. (D) The speed with which the exterminator’s gas kills termites drops off sharply as the gas dissipates throughout the building’s walls. (E) The exterminator’s gas pumping system works efficiently even when pumping gas into both the first and second stories of the building simultaneously. Difficulty - Hard
winterschool
Q2. For years, Pleasanton was a commuter community to industries in Middleburg. The close of several factories in Middleburg has set in motion a wave of mortgage defaults: citizens of Pleasanton are foreclosing on their houses in significant numbers. Many of the mortgages were held by local banks, and these adversely affected banks have been under pressure from their boards to offset the banks’ losses. One principal means to recoup these losses is for the banks to raise interest rates, including mortgage rates. If those owning property Pleasanton continue to default on their mortgages, then the mortgage rates offered by these banks will continue to rise. Which of the following, if true, best supports the conclusion that mortgage rates in Pleasanton will continue to increase? A. Mortgage rates in Middleburg have been steadily increasing over the past year and analysts expect them to continue increasing for some time. B. Many prospective homebuyers in the Pleasanton area, deterred by increased mortgage rates, have decided to purchase homes in other areas. C. Many current homeowners in Pleasanton, in reaction to increased interest rates, have put their homes on the market and are looking for homes in other areas. D. Many local businesses in Pleasanton, who were dependent on local residents employed in Middleburg, have been unable to pay the mortgage on the business properties they own. E. There are so few houses in Pleasanton that the banks cannot realize an economy of scale, making mortgage rates unrealistic for most potential homeowners. Difficulty - Hard
CR Questions July - 24 :Q1. A 1955 analysis of paint samples from an Italian painting found evidence of cobalt, suggesting the use of cobalt blue, a pigment not used in Europe before 1804. The painting was thus deemed to have been produced sometime after 1804. A 2009 analysis also found cobalt, but that analysis suggested that the painting might have been produced before 1804.
Which one of the following, if true, most helps to resolve the apparent discrepancy in the information above?
(A) The 2009 analysis revealed that cobalt was located only in the topmost paint layer, which was possibly applied to conceal damage to original paint layers.
(B) The 2009 analysis used sophisticated scientific equipment that can detect much smaller amounts of cobalt than could the equipment used for the 1955 analysis.
(C) The 2009 analysis took more samples from the painting than the 1955 analysis did, though those samples were smaller.
(D) Many experts, based on the style and the subject matter of the painting, have dated the painting to the 1700s.
(E) New information that came to light in the 1990s suggested that cobalt blue was used only rarely in Italy in the years immediately following 1804.
Q2. Motor coach driver: Professional drivers spend much more time driving, on average, than do other people and hence are more competent drivers than are other, less experienced drivers. Therefore, the speed limit on major highways should not be reduced, because that action would have the undesirable effect of forcing some people who are now both law-abiding and competent drivers to break the law.
Police officer: All drivers can drive within the legal speed limit if they wish, so it is not true to say that reducing the speed limit would be the cause of such illegal behavior.
The point at issue between the motor coach driver and the police officer is whether
A. it would be desirable to reduce the speed limit on major highways
B. professional drivers will drive within the legal speed limit if that limit is reduced
C. reducing the speed limit on major highways would cause some professional drivers to break the law
D. professional drivers are more competent drivers than are other, less experienced drivers
E. all drivers wish to drive within the speed limit
Difficulty - Hard