回复：第2题...请逻辑好的高手给解释一下.

Argument #: there are living communities of microorganisms there that have been cut off from surface life for millions of years.

Supporting Fact#: the discovery of living microorganisms in samples of material that were taken from holes drilled as deep as 1.74 miles.

One may argue that the samples used for supporting the claims by scientists may be from different depths or surface soil during the drilling process, which weakens the claim.

Thus, you need C as an assumption.

option E is irrelavent to the claim.

所有跟帖： 

• 我这题的答案是D,我认为D也是非常有道理的 -陶陶乐,乐陶陶- ♀ (215 bytes) () 01/01/2010 postreply 17:54:58

• 回复：我这题的答案是D,我认为D也是非常有道理的 -我是帅哥我怕谁- ♂ (65 bytes) () 01/01/2010 postreply 18:19:45

• 回复：回复：我这题的答案是D,我认为D也是非常有道理的 -陶陶乐,乐陶陶- ♀ (66 bytes) () 01/01/2010 postreply 18:49:52

• 不能选D,这里有一个知识点. -ntotl- ♂ (229 bytes) () 01/01/2010 postreply 18:59:08

• 回复：不能选D,这里有一个知识点. -陶陶乐,乐陶陶- ♀ (168 bytes) () 01/01/2010 postreply 19:06:29

• 出题的人可能把它作为"常识"处理了. -ntotl- ♂ (0 bytes) () 01/01/2010 postreply 19:08:20

• 更加说明我的"常识"太少了,... -陶陶乐,乐陶陶- ♀ (0 bytes) () 01/01/2010 postreply 19:10:36

• 我又看了一下,从逻辑上,答案d也不能支持. -ntotl- ♂ (50 bytes) () 01/01/2010 postreply 19:13:10

• 你说的没错 -陶陶乐,乐陶陶- ♀ (0 bytes) () 01/01/2010 postreply 19:17:19

• 即使答案D是正确的,也只不过是已陈述事实的补充,而不是另一个假设条件. -ntotl- ♂ (0 bytes) () 01/01/2010 postreply 20:17:15