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98.(32682-!-item-!-188;#058&006783)(GWD 28-Q29)
Early in the twentieth century, Lake
Konfa became very polluted.Recently fish populations have recovered as release of industrial pollutants has declined and the lake’s waters have become cleaner.Fears are now being voiced that the planned construction of an oil pipeline across the lake’s bottom might revive pollution and cause the fish population to decline again.However, a technology for preventing leaks is being installed.Therefore, provided this technology is effective, those fears are groundless.
The argument depends on assuming which of the following?
A. Apart from development related to the pipeline, there will be no new industrial development around the lake that will create renewed pollution in its waters.
B. There is no reason to believe that the leak-preventing technology would be ineffective when installed in the pipeline in Lake Konfa.
C. The bottom of the lake does not contain toxic remnants of earlier pollution that will be stirred into the water by pipeline construction.
D. Damage to the lake’s fish populations would be the only harm that a leak of oil from the pipeline would cause.
E. The species of fish that are present in Lake Konfa
now are the same as those that were in the lake before it was affected by pollution.
正确选项是C 为什么B不对呢
101.(31700-!-item-!-188;#058&006145)(GWD 3-Q38/prep 2-6 different type)
Two computer companies, Garnet and Renco, each pay Salcor to provide health insurance for their employees.Because early treatment of high cholesterol can prevent strokes that would otherwise occur several years later, Salcor encourages Garnet employees to have their cholesterol levels tested and to obtain early treatment for high cholesterol.Renco employees generally remain with Renco only for a few years, however. Therefore, Salcor lacks any financial incentive to provide similar encouragement to Renco employees.
Which of the following, if true, most seriously weakens the argument?
A. Early treatment of high cholesterol does not eliminate the possibility of a stroke later in life.
B. People often obtain early treatment for high cholesterol on their own.
C. Garnet hires a significant number of former employees of Renco.
D. Renco and Garnet have approximately the same number of employees.
E. Renco employees are not, on average, significantly younger than Garnet employees.
正确选项是c,勉强可以理解， 那B为什么不对呢？ |
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发表于 2012-4-29 16:47:08
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