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题库 / Prep2007E1-CR-1
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?
Confirming that the shungite genuinely contained fullerenes took careful experimentation.
Some fullerenes have also been found on the remains of a small meteorite that collided with a spacecraft.
The mineral shungite itself contains large amounts of carbon, from which the fullerenes apparently formed.
The naturally occurring fullerenes are arranged in a previously unknown crystalline structure.
Shungite itself is formed only under distinctive conditions.
Confirming that the shungite genuinely（严谨地） contained fullerenes took careful experimentation. 确认石墨包含富勒烯需要经过严谨实验，无关选项
Some fullerenes have also been found on the remains of a small meteorite（陨石） that collided（相撞） with a spacecraft. 有一些富勒烯在陨石和飞船相撞的残骸上被发现，so what？并没有提出lab和nature的区别
The mineral shungite itself contains large amounts of carbon, from which the fullerenes apparently formed. 石墨有大量的碳，这是富勒烯形成所需要的
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