PREP-1-1

YuCongyun

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.

 为什么要说这句话，和上下文有联系吗？

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.

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这句话的意思是说，由于在实验室合成Fullerence需要很苛刻的条件，所以，地理学家才可以用这样的一种理论来探讨地球地壳的状态。

因为，地壳可以自然形成F，就说明它满足实验室里那些苛刻的条件，而这些条件正是地壳的状态（如高压，高温之类的）。

YuCongyun

恩，看懂了！太感谢啦！

lynn_ql

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