GWD-4-38

ping0114

Q38:

Two centuries ago, laceName>TufelaceName> laceType>PeninsulalaceType> became separated form the mainland, isolating on the newly formed laceName>TufelaceName> laceType>IslandlaceType> a population of Turfil sunflowers.  This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland.  laceName>TufelaceName> Island is significantly drier than Tufe Peninsula was.  So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

Which of the following is an assumption on which the argument depends?

There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.

There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.

The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.

The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.

The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.

答案C

不明白 growing to be 40 centimeters taller than they did two centuries ago 如何得出?

byebyelove

因为差 40公分

所以前提要非mainland气候改变导致增长差40公分

ping0114

明白了,谢谢

bobomomo

感觉这T 怪怪的 不象ASSUMPTION 一般类型的样子

选这T 的时候 看到C 的NOT 我去掉了 原文结论不成立 于是就选了

但现在仔细看看 感觉我的思路好象有点问题！文章里说的是 on average, 40 centimeters shorter than Turfil sunflowers found on the mainland

C 去NOT ，

1. The mainland’s environment has （not ）changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.

与文章结论相反！是这个样子的吗？

还有 ABE 无关 D WEAKEN 吧？

谢谢

leeon

Before u do these assumption questions, u should know what is the conclusion of the paragraph. According to the conclusion, try to understand how the argument is reasoned to arrive the conclusion.

In this question, the argument is concluded that current average height of T's TS is attributable to changes in T's envirenmental conditions.  ay attention to words highlight above, changes in T's enviremental conditions, if C is not assumed, then it's possible that enviremental conditions changes in mainland causes the T's TS 40 cm shorter, then the conclusion will be questionable.

joe11

"Before u do these assumption questions, u should know what is the conclusion of the paragraph. According to the conclusion, try to understand how the argument is reasoned to arrive the conclusion."  -- Leeon

I don't want to over-emphasis it. It is by all means right. This should also be applied to Bold Face questions. Even if you run out of time and couldn' t read the full premises, you can still make educated guess just based on knowing the conclusions.

" 还有 ABE 无关 D WEAKEN 吧？"

A,B,D are "out of scope".  E is too extreme (only difference).  

You can believe D is weaken. However, the conlusion concerns "environmental conditions", but in D, it concerns "DRY environmental conditions". 偷换概念

[此贴子已经被作者于2004-10-19 21:55:31编辑过]

bobomomo

谢谢JOE11 和LEEON

THANX ALOT

swlfx

以下是引用joe11在2004-10-19 21:55:00的发言：

You can believe D is weaken. However, the conlusion concerns "environmental conditions", but in D, it concerns "DRY environmental conditions". 偷换概念

曾误以为D是支持作用呢，多谢斑竹。

入画

不明白 So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions. 中的TUFE‘S 是指大陆还是分离出去的岛。

C取非后如何削弱了结论呢？ 反正是由环境变化引起的嘛，不管是大陆还是分出去的岛都支持结论啊。

WD2007

文章的结论是So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.并不是环境变化引起植物的生长变化，

因此需要排除大陆环境变化因素

由可能是取非后削弱是大陆变化，而岛上环境没变化所以造成了４０的差距