Astronomer: Observations of the Shoemaker-Levi comet on its collision course with Jupiter showed that the comet broke into fragments before entering Jupiter's atmosphere in 1994, but they did not show how big those fragments were. Nevertheless, some indication of their size can be inferred from spectrographic analyses of Jupiter's outer atmosphere. After the fragments' entry, these analyses revealed unprecedented traces of sulfur. The fragments themselves almost certainly contained no sulfur, but astronomers believe that the cloud layer below Jupiter's outer atmosphere does contain sulfur. Since sulfur would have seeped into the outer atmosphere if comet fragments had penetrated this cloud layer, it is likely that some of the fragments were at least large enough to have passed through Jupiter's outer atmosphere without being burned up.
In the astronomer's argument, the two portions in boldface play which of the following roles?
AA: 题库11: The following appeared in the editorial section of a local newspaper.
“In the first four years that Montoya has served as mayor of the city of San Perdito, the population has decreased and the unemployment rate has increased. Two businesses have closed for each new business that has opened. Under Varro, who served as mayor for four years before Montoya, the unemployment rate decreased and the population increased. Clearly, the residents of San Perdito would be best served if they voted Montoya out of office and reelected Varro.”
AI: 题库57: Everywhere, it seems, there are clear and positive signs that people are becoming more respectful of one another’s differences.
Astronomer: Observations of the Shoemaker-Levi comet on its collision course with Jupiter showed that the comet broke into fragments before entering Jupiter’s atmosphere in 1994, but they did not show how big those fragments were. Nevertheless, some indication of their size can be inferred from spectrographic analyses of Jupiter’s outer atmosphere. After the fragments’ entry, these analyses revealed unprecedented traces of sulfur. The fragments themselves almost certainly contained no sulfur, but astronomers believe that the cloud layer below Jupiter’s outer atmosphere does contain sulfur. Since sulfur would have seeped into the outer atmosphere if comet fragments had penetrated this cloud layer, it is likely that some of the fragments were at least large enough to have passed through Jupiter’s outer atmosphere without being burned up.
In the astronomer’s argument, the two portions in boldface play which of the following roles?
A. The first is a claim that the astronomer seeks to show is true; the second acknowledges a consideration that weighs against the truth of that claim.
B. The first is a claim that the astronomer seeks to show is true; the second provides evidence in support of the truth of that claim.
C. The first and the second are each considerations advanced in support of the conclusion of the argument.
D. The first provides evidence in support of the conclusion of the argument; the second is that conclusion.
E. The first is a circumstance for which the astronomer seeks to provide an explanation; the second acknowledges a consideration that weighs against the explanation provided by the astronomer.
第3题:这道题比较靠中间出的。20几题的样子。估计是高分段的。这里有个类比,建房人和lobby的人。建房人这么说会对他们不利,意味着他们觉得他们要被threaten to leave the industry;说最后lobby的人还是接纳了那个他们曾经说会不利他们的regulation。我们最后要得到的结论是可以立对建房人不利的regulation,也就是不会threaten他们leave。assumption是类比的那个lobby,曾经也threaten to leave 第4题:题干说:只有好的可以留下当permanent工人,隐含条件说明permanent工人quality高。答案说:现在Permanent的工人就没有以前当过临时工的,说明该公司真正认为的好员工根本就不是临时工。于是再怎么从临时工里选好的还是没有好到可以当permanent工人的资格。