GWD28-Q28,一道纠结，C or D,我搜索过了，但是没有能说服我的

jameshzd

可我怎么觉得C无关呢，其他的相关plant怎么样，产不产h，好像不会有影响啊。。。

-- by 会员 雪梦儿 (2011/7/24 19:45:00)

~~我们同一战线~~挖哈哈

-- by 会员 deifica (2011/7/24 23:00:41)

看我在5楼的解释撒~

雪梦儿

http://www.urch.com/forums/gmat-critical-reasoning/108597-certain-cultivated-herb.html 还好老美有同意我的。。

-- by 会员 deifica (2011/7/24 22:54:13)

话说我上次在这个论坛上面去注册，结果注册失败了。。。

sdcar2010

E) is a wrong answer.

E) the concentration of histidine in the growing herb declines as the plant approaches maturity.
If so, then the herb has less and less histidine before REACHING adulthood. And if histidine is required for the herb to survive in the metal-rich soil, the herb would DIE before reaching maturity. This is CONTRARY to the premise: the herb THRIVES in that type of soil.

alancui

I chose D, and in fact, some plants really do that with histidine.

E) is a wrong answer.

E) the concentration of histidine in the growing herb declines as the plant approaches maturity.
If so, then the herb has less and less histidine before REACHING adulthood. And if histidine is required for the herb to survive in the metal-rich soil, the herb would DIE before reaching maturity. This is CONTRARY to the premise: the herb THRIVES in that type of soil.

-- by 会员 sdcar2010 (2012/1/2 11:31:04)

sdcar2010

No. The conclusion of the passage is:
the herb’s high histidine production is what allows it to grow in metal-rich soils.

D) does not strengthen this conclusion, since D) only confirms that the herb can survive but D) is moot as to the REASON why it does so.

I chose D, and in fact, some plants really do that with histidine.

E) is a wrong answer.

E) the concentration of histidine in the growing herb declines as the plant approaches maturity.
If so, then the herb has less and less histidine before REACHING adulthood. And if histidine is required for the herb to survive in the metal-rich soil, the herb would DIE before reaching maturity. This is CONTRARY to the premise: the herb THRIVES in that type of soil.

-- by 会员 sdcar2010 (2012/1/2 11:31:04)

-- by 会员 alancui (2012/2/6 20:17:53)

yangcherry

其实C就是说herb所属的那个group的植物，跟herb一样都有H这个东西。我觉得这个答案属于直接加强结论类型，这种答案出现的比较少，所以大家一看什么others之类的词就觉得无论如何都不应该是它。

bay881024

不太赞成c啊。。原文结论是"the herb's..."答案应该只refer to this kind of herb rather than its closely related group of plants吧。个人认为C是干扰相，实则为无关项，原文要求加强的结论是“h这种物质和这种herb能在metal-rich soils里存活的关系”，对象是这种特指的herb：“the herb’s high histidine production is whatallows it to grow in metal-rich soils”。
再看D，原文说“ itproduces large amounts of histidine, an amino acid that, in test-tubesolutions, renders these metals chemically inert.”
D选项很好地填补了gap，紧贴结论：“cultivation of the herb in soil with highconcentrations of the metals will, over an extended period, make the soilsuitable for plants to which the metals are toxic”


注意看颜色对应部分。
拙见，欢迎拍砖

Bianshaozhe

谢谢各位大神的指点，减少gap

菠萝蜜夭夭

同意17楼！！！！！！