之前录音中说两处BF都是论据。但是我做题的时候觉得第一处BF是说了一个发现，后面是解释为什么会出现这种情况。所以看选项时只看对first的表述，选了E。求老师解答！！ 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? 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. 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. The first and the second are each considerations advanced in support of the conclusion of the argument. The first provides evidence in support of the conclusion of the argument; the second is that conclusion. 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.

请唐瑭老师回答一下：老师，我在附件中上传了1张图片，麻烦您解答一下图片里的那道题。我按您课上说的，先找2个黑体字句子中间是否有转折词，判断2句话之间关系，我找到了but（在图片里第5行），所以我觉得2句间应该是反向的，因此我就把E排除了，想问一下为什么这道题选E呢？谢谢老师

之前录音中说两处BF都是论据。但是我做题的时候觉得第一处BF是说了一个发现，后面是解释为什么会出现这种情况。所以看选项时只看对first的表述，选了E。求老师解答！！ 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? 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. 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. The first and the second are each considerations advanced in support of the conclusion of the argument. The first provides evidence in support of the conclusion of the argument; the second is that conclusion. 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.

前面一个加黑的句子表明一个事 后面有个but 于是认为这两个句子之间是转折关系，于是选了E 后来将这句子内容看了才发现but后面和前面加黑的那个句子是一个意思 、老师，怎么看连接词不看具体内容区别出是整体转折还是细节中的转折呢