求助prep CR－1

ilhht

    

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.

    

有没有高手可以帮我解答这个题？

Howto

看以前的讨论贴http://forum.chasedream.com/dispbbs.asp?BoardID=24&ID=249408&replyID=2516483&skin=1

ilhht

谢谢楼上的朋友，你怎么找到的啊，我在搜索里面写prep1－1竟然没有找到，我还以为大家都做对了。55555