【再发一道GWD的题~~谢谢帮助~~】

水色青空 · 发表于 2010-2-11 12:19:16

GWD6-Q40:
It is theoretically possible that bacteria developed on Mars early in its history and that some were carried to Earth by a meteorite. However, strains of bacteria from different planets would probably have substantial differences in protein structure that would persist over time, and no two bacterial strains on Earth are different enough to have arisen on different planets. So, even if bacteria did arrive on Earth from Mars, they must have died out.
The argument is most vulnerable to which of the following criticisms?
A. It fails to establish whether bacteria actually developed on Mars.
B. It fails to establish how likely it is that Martian bacteria were transported to Earth.
C. It fails to consider whether there were means other than meteorites by which Martian bacteria could have been carried to Earth.
D. It fails to consider whether all bacteria now on Earth could have arisen from transported Martian bacteria.
E. It fails to consider whether there could have been strains of bacteria that originated on Earth and later died out.

正确答案是E，可是不太明白这道题的逻辑~希望大家帮帮忙~~

clarry · 发表于 2010-2-12 00:43:17

A- out of scope. the quesion is one step forward from the issue discussed
B- ouf of scope. the question is just a rewrite of the main issue to be proved.
C- out of scope by stating "means other than...
D- illogical by stating "all bacterial...
E- if no bacterial that originated on earth has died out, the hypothesis is then toppled.

a typical "

OE" question.

水色青空 · 发表于 2010-2-12 20:18:24

还是不太明白~~~~E~

edwardelric · 发表于 2010-2-12 20:24:07

题你要是读懂了其实很简单的啊~
地球原来就有生物，只是因为现在灭绝了，我们看不到罢了，正是原文陈述中的忽略项目

水色青空 · 发表于 2010-2-12 20:40:01

题你要是读懂了其实很简单的啊~
地球原来就有生物，只是因为现在灭绝了，我们看不到罢了，正是原文陈述中的忽略项目

-- by 会员 edwardelric (2010/2/12 20:24:07)

啊？？。。。那红色部分要怎么理解？~~~

水色青空 · 发表于 2010-2-12 20:41:57

题你要是读懂了其实很简单的啊~
地球原来就有生物，只是因为现在灭绝了，我们看不到罢了，正是原文陈述中的忽略项目

-- by 会员 edwardelric (2010/2/12 20:24:07)

而且也没有搞太明白E的逻辑额~~麻烦解释下了~~非常感谢！~

edwardelric · 发表于 2010-2-12 20:47:11

就是交代现状啊~现在没有蛋白成分不一样的，所以作者的出结论即使有外来的，也灭绝了
e不正是说考虑到我们现在看到的是火星的，原来地球上的灭绝了，没有考虑到嘛~

水色青空 · 发表于 2010-2-12 21:18:11

就是交代现状啊~现在没有蛋白成分不一样的，所以作者的出结论即使有外来的，也灭绝了
e不正是说考虑到我们现在看到的是火星的，原来地球上的灭绝了，没有考虑到嘛~

-- by 会员 edwardelric (2010/2/12 20:47:11)

那个。。。。。。能说一遍题目么？。。。。我没搞懂这个逻辑。。。。。

edwardelric · 发表于 2010-2-12 21:52:25

It is theoretically possible that bacteria developed on Mars early in its history and that some were carried to Earth by a meteorite. However, strains of bacteria from different planets would probably have substantial differences in protein structure that would persist over time, and no two bacterial strains on Earth are different enough to have arisen on different planets. So, even if bacteria did arrive on Earth from Mars, they must have died out
理论上来讲在火星上在早期出现的细菌能够被带到地球通过行星，但是来自不同星球的细菌结构在蛋白质结构上的不同随着时间会延续的，现在地球上没有两个是不用的细菌结构，所以，即使细菌从火星上来的，他们也是一定消失了~~

sunsetchen · 发表于 2010-2-15 17:18:22

我看到的这道题的答案是D啊~~

本贴相关题目 GMATPrep-2008E1-CR-97 | TN-04-CR-40 (YCHE)

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