求助：PREP破解第一道B选项

dawnssing

Although fullerenes--spherical molecules made entirely of carbon--were first found in the laboratory, they have since been found in nature, formed in fissures of the rare mineral shungite.  Since laboratory synthesis of fullerenes requires distinctive conditions of temperature and pressure, this discovery should give geologists a test case for evaluating hypotheses about the state of the Earth's crust at the time these naturally occurring fullerenes were formed.
(A) Confirming that the shungite genuinely contained fullerenes took careful experimentation.
(B) Some fullerenes have also been found on the remains of a small meteorite that collided with a spacecraft.  irrelevant, another way –meteorite .  
(C) The mineral shungite itself contains large amounts of carbon, from which the fullerenes apparently formed.    form
(D) The naturally occurring fullerenes are arranged in a previously unknown crystalline structure.  unknown structure, different from the fullerenes in the lab—weak the premise ----can not be used to evaluate the state  
(E) Shungite itself is formed only under distinctive conditions.  

答案排除了B选项，而高智威的解析是      
B: 有模糊词some，然而文章结论无绝对词，干掉!;
请问那个模糊词和绝对词是什么啊？有木有同学帮忙分析下这个some的意义？
排除B的原因，在我看来应该是Irrelevant，因为这一发现的意义是可以作为实验案例，与其他的发现与来源是不相关的。

tsx190

Although fullerenes--spherical molecules madeentirely of carbon--were first found in the laboratory, they have since beenfound in nature, formed in fissures of the rare mineral shungite.  Since laboratory synthesis of fullerenesrequires distinctive conditions of temperature and pressure, this discovery should givegeologists a test case for evaluating hypotheses about the state of the Earth'scrust at the time these naturally occurring fullerenes were formed (结论).

Logic: weaken 题型（看原文：找出结论和推出该结论的前提。）
前提：（1） F自然界中存在于S
           （2）F在实验室中需要特定条件合成
结论：推断F在自然界中是以特定条件合成
 

Which of the following, if true, most seriously undermines the argument?

(A)  Confirming that the shungite genuinely contained fullerenes tookcareful experimentation.
(确认S中含F 是原文前提，排除)
(B) Some fullerenes have also been found on theremains of a small meteorite that collided with a spacecraft.(F 同时在陨石上发现，不能weaken结论)
(C) The mineral shungite itself contains largeamounts of carbon, from which the fullerenes apparently formed.(S由大量的C原子构成，F也有大量C形成 无关)
(D) The naturally occurring fullerenes arearranged in a previously unknown crystalline structure.(自然界中的F是以一种未知的结构存在，潜在说明自然界的F和实验室的F不是一码事)
(E) Shungite itself is formed only underdistinctive conditions.(S 本身在特定条件条件下形成，support结论)