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.
Which of the following, if true, most seriously undermines the argument?
(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.
(C) The mineral shungite itself contains large amounts of carbon, from which the fullerenes apparently formed.
(D) The naturally occurring fullerenes are arranged in a previously unknown crystalline structure.
(E) Shungite itself is formed only under distinctive conditions.
答案D
我觉得D和题目没有关系啊
我认为C对
请大家帮帮忙作者: templars 时间: 2011-7-2 22:17
题干推理:
因为在lab合成fullerenes需要distinctive conditions of temperature and pressure, 所以geologists可以推断在自然界中形成fullerenes的时候the state of the Earth's crust. 这里隐含的意思是说，lab里面的distinctive conditions of temperature and pressure和形成自然fullerenes时Earth's crust的condition是相似的.
原来这题的意思是通过推测自然形成时的条件来进行实验室的模拟去合成那个东东。。。。没读懂题。。。。。
B的意思是说那个地方自己就有很多碳，（潜意思是可能把mineral S误认为是那个东东了，但是题干里已经说了 they have since been found in nature, formed in fissures of the rare mineral shungite，就是已经在这里找到了，这个是在否定题干。。。。
