如今JJ里面GWD28-Q28题，逻辑一题，哪个答案更好？

AdamHHH

很明顯C一定不對阿？？....

QingHuang

I think D is the better answer

The experiment was originally performed in "test-tube solutions", but is it still true in realities (in soil)?  The answer D provides that it is still true in the soil (it render the mental inert in the soil, therefore make other plant survive)

AdamHHH

以下是引用QingHuang在2007-11-25 23:59:00的发言：

I think D is the better answer

The experiment was originally performed in "test-tube solutions", but is it still true in realities (in soil)?  The answer D provides that it is still true in the soil (it render the mental inert in the soil, therefore make other plant survive)

明明爭議就是C跟E就是有人要選D...沒有D這種神奇藥草拉...........ETS的題目不會不符合真理跟事實

QingHuang

The hypothesis is that "the herb’s high histidine production is what allows it to grow in metal-rich soil. 

There is no doubt that "this herb produces histidine", which is already proven by the study. 

What needs to be proven is that what happens in the test tube solution still happens in the soil. 

It is possible that the herb's histidine will make mental inert in the solution but can't make it inert in the soil. 

 

[此贴子已经被作者于2007-11-26 8:00:49编辑过]

伊布拉莫维琨

dlmmdajgal

这题选C很明显

原题：one of a group;  it produces large amounts of histidine; renders these metals chemically inert 导致结论 the herb’s high histidine production is what allows it to grow in metal-rich soils

选项支持这个结论 当然要说 others in the group 也有同样的能力，所以在铁多土地里必须要具体吸收这些物质的能力。

e很模糊，长大成熟histidine减少怎么了？难道长大就不需要营养了？

beiting

这题选D 我确定

alan722

支持选C，题目先说one of group，选项呼应个others，正好支持这个观点。如果others没有H这东西也能活的好好的，是不是否定专家的假设呢？所以，反过来，是加强

D只是把题干说的东西反过来再说了一遍

至于E，题目有说植物长成熟了就需要的养分少了么？没有的话，都是做题人的主观臆测，是错误选项

[此贴子已经被作者于2009/7/22 23:20:21编辑过]

aoi5551

C. others of the closely related group of plants are also found to produce histidine in large quantities

medusa0901

GWD28-Q28:




Which of the following most logically completes the argument?









A certain cultivated herb is one of a group of closely related plants that thrive in soil with high concentrations of metals that are toxic to most other plants.  Agronomists studying the herb have discovered that it produces large amounts of histidine, an amino acid that, in test-tube solutions, renders these metals chemically inert.  ossibly, therefore, the herb’s high histidine production is what allows it to grow in metal-rich soils, a hypothesis that would gain support if ______.





首先，这个填空题型分3种：MUST BE TRUE/MAIN POINT/ASSUMPTION a hypothesis that would gain support if ______.
导致大家不知道选哪个的原因应该是清楚它到底问啥？




结论是: herb with high histidine-->grow in high metal soil
如果是assumption填补结论GAP
大家可能会选C
C. others of the closely related group of plants are also found to produce histidine in large quantities
但这个怎么看怎么像无关呢，gmat不会饶太多弯，other related plants 和结论提出的这个herb 不是一个东西啊，明显是背景信息填词用的


再看
如果是must be true 是原文某句话(premise/conclusion)的重写或逆否命题或某几句话的结合 (paraphrase, repeat)
herb have discovered that it produces large amounts of histidine, an amino acid that, in test-tube solutions, renders these metals chemically inert.  ossibly, therefore, the herb’s high histidine production is what allows it to grow in metal-rich soils,
=herb 让metal 无用，所以 herb with high histidine-->grow in high metal soil


D. cultivation of the herb in soil with high concentrations of the metals will, over an extended period, make the soil suitable for plants to which the metals are toxic
第一句话说开始herb with high histidine thrive in soil with high concentrations of metals that are toxic to most other plants
=metal soil-->toxic to most other plants-->other plants do not thrive
soil suitable to other plants 不一定不toxic to other plants, 也许less toxic, 离题太远
D 说种herb with high histidine-->soil suitable for other plants 没有提到是不是herb with high histidine会让它自己grow in high metal soil


E. the concentration of histidine in the growing herb declines as the plant approaches maturity
因果正确herb with high histidine能在high metal soil里长
             histidine少了，histidine不用长了