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[Critical Reasoning]

试题详情

题目:

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.  Possibly, therefore, the herb's high histidine production is what allows it to grow in metal-rich soils, a hypothesis that would gain support if ______.

选项:

A、histidine is found in all parts of the plant—roots, stem, leaves, and flowers
B、the herb's high level of histidine production is found to be associated with an unusually low level of production of other amino acids
C、others of the closely related group of plants are also found to produce histidine in large quantities
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
E、the concentration of histidine in the growing herb declines as the plant approaches maturity

答案:

C

提问:

原文结论是说herb有高含量的histidine产物,问题问支持,选了B,答案讲解给了C和D两个答案,麻烦老师分析一下思路,谢谢。

解答:

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阅读5559
解答: sysadmin

提问:

这个题答案是D还是E啊

解答:

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阅读5637
解答: 胡凡老师

提问:

这题选什么?我选的是C,虽然老师们讲课的时候说C项无关,直接给否了,但是我觉得D项才是无关的,种这个植物跟是否能净化土壤没关系;文章说的是一组相近的植物都能在高金属的环境下生活,但是研究的对象只是其中一种植物,如果其它植物不能产生H,那证明H不是允许其在金属环境内生长的主要原因,可能还有其它原因,所以我选C.

解答:

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解答: 王文静老师

提问:

D E 原文结论:histidine导致这种草在高金属含量的土壤里grow D:这种草能够在高金属含量的土壤里grow E:随着这种草grow活动的下降,它的histidine浓度也在下降。 我选E,E项是原文结论的一个逆否命题,直接支持了原文需要支持的结论。

解答:

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解答: sysadmin老师

提问:

原文结论是说herb有高含量的histidine产物,问题问支持,选了B,答案讲解给了C和D两个答案,麻烦老师分析一下思路,谢谢。

解答:

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阅读5560
解答: sysadmin老师

提问:

CD选项存疑

解答:

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解答: sysadmin老师

提问:

我选D,答案是B 原文说herb产生的histidine使其能够在对大部分植物有毒的土壤中生长 A明显无关,干掉 B说的是histidine production和其他amino acids的关系,和原文谈的关系无关 C说其他的植物怎么着,也干掉 D说herb使得土壤适合植物生长,和原文沾边,留着 E说当植物成熟的时候histidine会降低,好像和原文也没什么关系

解答:

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解答: sysadmin老师

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