ChaseDream

标题: 一道破解的题目，请各位帮忙看看吧，谢谢 [打印本页]

作者: wjk 时间: 2011-7-22 14:28
标题: 一道破解的题目，请各位帮忙看看吧，谢谢

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.

(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
自己想了好久，却始终觉得D像是无关选项当时做的时候就不知道该选哪个，请求帮助！！！

作者: 塔罗牌 时间: 2011-7-22 14:44
我当时作这题也做的晕乎乎的但感觉其他几个更无关就选了

欢迎光临 ChaseDream (https://forum.chasedream.com/)