GWD-29-Q28 看看这道以前的争议题现在有没有新的看法

hughlv

41 GWD-29-Q28

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.

答案是C，但是有人说Prep上的答案是D，而我当时选的是E。也有人认为应该选E的。
之前的讨论：http://forum.chasedream.com/GMAT_CR/thread-252976-1-1.html

Iljiajia

还是选C，第一句话是circumstance,从第二句话到it is前都是为it is引领的结论做铺垫的。

hughlv

自己想通了。主要是纠结于一些名词，总觉得第一个BF应该是evidence，现在觉得称之为consideration也没什么问题。

QQCD

请问Nevertheless, some indication of their size can be inferred from spectrographic analyses of Jupiter’s outer atmosphere.是那个C项中所支持的主要观点吗？？

CeeU

D肯定不对的，第二个粗体是premise，它后面那句才是conclusion