53.硫磺问题
The emission of sulfur dioxide when high-sulfur coal is burned is restricted by law. New coal-burning plants usually comply with the law by installing expensive equipment to filter sulfur dioxide from their emissions. These new plants could save money by installing instead less expensive cleaning equipment that chemically removes most sulfur from coal before combustion.
Which of the following, if known, would be most relevant to evaluating the claim above about how new coal-burning plants could save money?
A. Whether existing oil-burning plants are required to filter sulfur dioxide from their emissions
B. Whether the expense of installing the cleaning equipment in a new plant is less than the expense of installing the cleaning equipment in an older plant
C. Whether the process of cleaning the coal is more expensive than the process of filtering the emissions
D. Whether lawful emissions of sulfur dioxide from coal-burning plants are damaging the environment
E. Whether existing plants that use the filtering equipment could replace this equipment with the cleaning equipment and still compete with new plants that install the cleaning equipment作者: rossyx 时间: 2011-4-11 21:26
61. 猴子与拥挤问题
一种动物在高密度聚集时，会发生冲突。一种候子在拥挤的情况下，不会发生冲突。所以动物和动物的情况不一样，拥挤的时候不一定冲突。
问Strengthen。
我选了这种猴子在某些刺激下比其他的猴子彪焊很多
考古
GWD28-Q7:
In1960’s studies of rats, scientists found that crowding increases the number ofattacks among the animals significantly. But in recent experiments in which rhesus monkeys were placed in crowdedconditions, although there was an increase in instances of “coping”behavior—such as submissive gestures and avoidance of dominantindividuals—attacks did not become any more frequent. Therefore it is not likely that, for anyspecies of monkey, crowding increases aggression as significantly as was seenin rats.
Whichof the following, if true, most strengthens the argument?
A. Allthe observed forms of coping behavior can be found among rhesus monkeys livingin uncrowded conditions.
B. Inthe studies of rats, nondominant individuals were found to increasingly avoiddominant individuals when the animals were in crowded conditions.
C. Rhesusmonkeys respond with aggression to a wider range of stimuli than any othermonkeys do.
D. Someindividual monkeys in the experiment were involved in significantly moreattacks than the other monkeys were.
E. Someof the coping behavior displayed by rhesus monkeys is similar to behaviorrhesus monkeys use to bring to an end an attack that has begun.
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出处：GWD19-7
答案貌似是C～～作者: rossyx 时间: 2011-4-11 21:29
