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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.
fullerenes 要求特别温度和湿度 结论：this discovery可以检测state of the earth's crust at the time fullerenes were formed. 正确答案作用：此discovery对于检测the state of Earth's crust at the time fullerenes没有用
因为：Since laboratory synthesis of fullerenes requires distinctive conditions of temperature and pressure
结果： 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.
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