请教prep的一道题

关灵韶

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.

答案D

我觉得D和题目没有关系啊

我认为C对

请大家帮帮忙

andyian

题干推理:
因为在lab合成fullerenes需要distinctive conditions of temperature and pressure, 所以geologists可以推断在自然界中形成fullerenes的时候the state of the Earth's crust. 这里隐含的意思是说，lab里面的distinctive conditions of temperature and pressure和形成自然fullerenes时Earth's crust的condition是相似的.

这里面隐含的assumption就是说，在lab里面合成fullerenes的过程和在Earth's crust里面生成fullerenes的过程是类似的。

但是D选项说自然界中fullerenes是在一种未知的crystalline structure生成的, 这就意味着，在lab里面synthesize fullerenes的方法与在自然界生成fullerenes的方法是不一样的, 从而与上面分析的assumption不一致.

houzhongxu

以下是引用关灵韶在2009-6-4 9:27:00的发言：

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.

答案D

我觉得D和题目没有关系啊

我认为C对

请大家帮帮忙

第一步，问驳斥

第二步，题干说，尽管F最开始于实验室发现，但它们已经存于自然界很久，以F的形式存于稀缺矿物质S中。因为人造F需要温度和气压的环境，这项发现给予G去评估一个地球的C的假设。

原文很明了，因为实验室有什么，所以顺藤摸瓜自然环境必然有什么

第三步，看选项

A确认S的确含F需要仔细试验，明显残废，杀

B有些。停！感觉不好，留着，出于节省时间的目的，跳过。

C说S自身含有炭，题干提过炭么？从句不看了，扯淡选项。杀！

D自然形成的F是之前的什么水晶体排列的什么东东，我没感觉，揣着吧

E看到only想干掉，削弱不需要这么强的语气词

回头看看B吧

有些F在什么地方的残留物里面发现呢？什么宇宙飞船的碰撞物？？？野马！杀！

那就D吧

做完

yangyuxiao

以下是引用关灵韶在2009-6-4 9:27:00的发言：
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.
答案D
我觉得D和题目没有关系啊
我认为C对
请大家帮帮忙

第一步，问驳斥
第二步，题干说，尽管F最开始于实验室发现，但它们已经存于自然界很久，以F的形式存于稀缺矿物质S中。因为人造F需要温度和气压的环境，这项发现给予G去评估一个地球的C的假设。
原文很明了，因为实验室有什么，所以顺藤摸瓜自然环境必然有什么
第三步，看选项
A确认S的确含F需要仔细试验，明显残废，杀
B有些。停！感觉不好，留着，出于节省时间的目的，跳过。
C说S自身含有炭，题干提过炭么？从句不看了，扯淡选项。杀！
D自然形成的F是之前的什么水晶体排列的什么东东，我没感觉，揣着吧
E看到only想干掉，削弱不需要这么强的语气词
回头看看B吧
有些F在什么地方的残留物里面发现呢？什么宇宙飞船的碰撞物？？？野马！杀！
那就D吧
做完

-- by 会员 houzhongxu (2009/6/4 18:28:00)

LS的解释太强悍了，赞一个~！

gracezz

原来这题的意思是通过推测自然形成时的条件来进行实验室的模拟去合成那个东东。。。。没读懂题。。。。。
B的意思是说那个地方自己就有很多碳，（潜意思是可能把mineral S误认为是那个东东了，但是题干里已经说了 they have since been found in nature, formed in fissures of the rare mineral shungite，就是已经在这里找到了，这个是在否定题干。。。。

不知道我这个思路来对付B可以吗

birdflyorc

以下是引用关灵韶在2009-6-4 9:27:00的发言：
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.
答案D
我觉得D和题目没有关系啊
我认为C对
请大家帮帮忙

第一步，问驳斥
第二步，题干说，尽管F最开始于实验室发现，但它们已经存于自然界很久，以F的形式存于稀缺矿物质S中。因为人造F需要温度和气压的环境，这项发现给予G去评估一个地球的C的假设。
原文很明了，因为实验室有什么，所以顺藤摸瓜自然环境必然有什么
第三步，看选项
A确认S的确含F需要仔细试验，明显残废，杀
B有些。停！感觉不好，留着，出于节省时间的目的，跳过。
C说S自身含有炭，题干提过炭么？从句不看了，扯淡选项。杀！
D自然形成的F是之前的什么水晶体排列的什么东东，我没感觉，揣着吧
E看到only想干掉，削弱不需要这么强的语气词
回头看看B吧
有些F在什么地方的残留物里面发现呢？什么宇宙飞船的碰撞物？？？野马！杀！
那就D吧
做完

-- by 会员 houzhongxu (2009/6/4 18:28:00)

博森的做法

supertina

我觉得这道题有点像在考化学...
D中说"previously unknown"，就是指实验室合成的F和S里的F不是一样东东，可能是化学组成成分相同，但是结构不一样，可能就是同分异构体之类的东西。
所以，两样东西尽然都不一样，就根本不可能由F的生成条件推出SF的生成条件啦~
个人看法，仅供参考~

flewrudy

我是小白。。。我觉得b也没有问题啊，因为some是外面来的，所以我们无法确定是不是所有的都能说明是地球上的，所以即使了解其结构，也不能说就是当时的地球环境了。。。
求反驳

cloudballoon

我原本也跟你的想法一樣!!
但是  若那個物質被發現在隕石中 那地質學家他們可以很明顯知道  該物質的生成可能來自外太空  所以他們基本上不會用隕石去做採樣   會是以地殼中的物質作採樣 研究  (隕石跟地殼的石塊應該可以很明顯的區分 藉由一些放射線物質之類的吧!!)   ^^

cooperlee01

注意本题的结论是自然界中已经找到了fullerenes，现在根据fullerenes来推断地壳在形成fullerenes时的状态。B完全无关。D中说自然的fullerenes和实验室中的不一样，说明不能按实验室的条件推地壳的状态，weaken了原文。