ChaseDream
搜索
返回列表 发新帖
00:00:00

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?

正确答案: D

相关帖子

更多...

更多相关帖子

524

帖子

15

好友

4712

积分

ChaseDream

注册时间
2003-03-17
精华
8
解析
查看: 3265|回复: 2
打印 上一主题 下一主题

刚做完PREP1模考···一道逻辑题···2007prep1破解的第1题~~求解答~

[复制链接]
跳转到指定楼层
楼主
发表于 2010-8-22 17:39:14 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
1.    (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.

有关生命科学题目都很头痛~哎~~

答案是D~没明白~~求NN详细分析下题目选项~多谢了~
收藏收藏 收藏收藏
沙发
发表于 2010-8-23 00:51:44 | 只看该作者
不头痛呵呵  
题目里面的却有很多新名词,不好理解,但逻辑还是很清楚的。 一群科学家在实验室里面生成了f,然后发现在自然界f也存在。因为实验室有特殊的环境来制造f,所以科学家推断自然界的环境应该是类似实验室的,或者说可以从实验室的数据来推断自然界的环境。
A.说明实验做的很仔细,加强。
B.有一点点轻微的削弱:似乎可以解释为这玩意是外太空来的。但是注意,前面是some.如果其他的f在地球上产生,那实验方法还是可以的。
C. 具体说明了f的产生过程,无关选项,不能加强或是削弱。

D.重点来了:那个f外面是有晶体保护的。那科学家只能推测晶体的构造 因为f没有接触地表,无法得知地表的构造

E. 加强了原文,说明这方法巨好。

这么晚来发帖,希望对你有用~
板凳
 楼主| 发表于 2010-8-23 10:47:24 | 只看该作者
不头痛呵呵  
题目里面的却有很多新名词,不好理解,但逻辑还是很清楚的。 一群科学家在实验室里面生成了f,然后发现在自然界f也存在。因为实验室有特殊的环境来制造f,所以科学家推断自然界的环境应该是类似实验室的,或者说可以从实验室的数据来推断自然界的环境。
A.说明实验做的很仔细,加强。
B.有一点点轻微的削弱:似乎可以解释为这玩意是外太空来的。但是注意,前面是some.如果其他的f在地球上产生,那实验方法还是可以的。
C. 具体说明了f的产生过程,无关选项,不能加强或是削弱。

D.重点来了:那个f外面是有晶体保护的。那科学家只能推测晶体的构造 因为f没有接触地表,无法得知地表的构造

E. 加强了原文,说明这方法巨好。

这么晚来发帖,希望对你有用~
-- by 会员 2008115061 (2010/8/23 0:51:44)



谢谢啦~解释的很清楚···要是我肯定想不清楚···
您需要登录后才可以回帖 登录 | 立即注册

Mark一下! 看一下! 顶楼主! 感谢分享! 快速回复:

手机版|ChaseDream|GMT+8, 2024-9-29 20:07
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号

ChaseDream 论坛

© 2003-2023 ChaseDream.com. All Rights Reserved.

返回顶部