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标题: 【问PREP一道CR——不知自己理解是否有误。】 [打印本页]

作者: manna    时间: 2010-5-27 07:20
标题: 【问PREP一道CR——不知自己理解是否有误。】
1.D    (24179-!-item-!-188;#058&000705)

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.

我不知道自己理解得是否正确,求NN帮我确认下:
因为 fullerenes是在previously unknown crystalline structure里形成的,所以就算geologists evaluate hypotheses about the state of the Earth's crust也是没有意义的,因为fullerenes不是在crust里形成的,分析了crust的state对于discovery也没有帮助。

对否?
作者: manna    时间: 2010-5-29 00:47
没人解答哪?等了一天了都。

自己顶。

来嘛来嘛来解答嘛。
作者: yawei5252    时间: 2010-5-29 12:53
我的理解是:因为 fullerenes是在previously unknown crystalline structure里自然形成的,所以discovery中“fullerenes是在实验室的严格条件中(直接)形成的”就无法对地壳使fullerenes形成作出直接判断。。。因为fullerenes可以说:我在你们人类不知道的结构里形成的,你丫怎么就能肯定这个结构里没有实验室的条件列?你丫又怎么能肯定这结构里有实验室的条件列?你丫啥都不知道还能评价我是不是在地壳中形成的嗦?   所以discovery中的实验室条件就跟state切断了关系。。。。
          嘿嘿,,恶搞恶搞,,其实这题我也做错了,,坐等大牛。。。。。
作者: manna    时间: 2010-5-29 12:55
我的理解是:因为 fullerenes是在previously unknown crystalline structure里自然形成的,所以discovery中“fullerenes是在实验室的严格条件中(直接)形成的”就无法对地壳使fullerenes形成作出直接判断。。。因为fullerenes可以说:我在你们人类不知道的结构里形成的,你丫怎么就能肯定这个结构里没有实验室的条件列?你丫又怎么能肯定这结构里有实验室的条件列?你丫啥都不知道还能评价我是不是在地壳中形成的嗦?   所以discovery中的实验室条件就跟state切断了关系。。。。
          嘿嘿,,恶搞恶搞,,其实这题我也做错了,,坐等大牛。。。。。
-- by 会员 yawei5252 (2010/5/29 12:53:47)



你,就是,大牛!
作者: yawei5252    时间: 2010-5-29 13:30
惭愧,我只是做错了之后、分析的,,,其实我当时做的时候也是想错了。。。大牛不敢当,小菜菜啦。。。。。




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