洛基犬28题 关于硫的BF题 麻烦北落狮门来确认一下呢

oNshOt

GWD原题
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 inboldfaceplay 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.

buttbutter

楼主好人啊~~

oNshOt

就是这个

-- by 会员 北落狮门 (2010/5/10 11:13:35)

谢谢啦～～

北落狮门

就是这个

忽然忘了解脱

亲们，睡了

-- by 会员 草稿纸 (2010/5/10 0:21:36)

草稿纸童鞋~~~晚安~

草稿纸

亲们，睡了

忽然忘了解脱

这个是要UP的，LZ把标题改下下吧，加上考古标注。。。。。。不然比较难被发现~~~~