GWD-13-31-伤脑筋的题，讨论讨论

alohabrian

By competing with rodents for seeds, black ants help control rodent populations that pose a public health risk.  However,
a very aggressive species of blank ant, the Loma ant, which has
recently invaded a certain region, has a venomous sting that is often
fatal to humans.  Therefore, the planned introduction into that region of ant flies, which prey on Loma ants, would benefit public health.

 

Which of the following, if true, most strengthens the argument?

 

A.    Ant flies do not attack black ants other than Loma ants.

2. Loma ants are less effective than many bird species in competing with rodents for seeds.
3. Certain other species of black ants are more effective than Loma ants in competing with rodents for seeds.
4. The sting of Loma ants can also be fatal to rodents.
5. The use of pesticides to control Loma ants could have harmful effects on the environment.

A和C之间徘徊。第一眼看是A,但想想C也对。

A就不说了。说说对C的理解

我认为C说的是这么回事：Loma争抢seeds的效果比不上其他black ants,又由于competing seeds决定了rodent population, 所以Loma在抑制rodent population上发挥的作用不重要。
于是把引入ant flies杀掉Loma，不会影响对于rodent population的控制效果。于是C也strenthen了原文。

我觉得A和C都在strengthen原文。

并且A和C必须同时成立。


请教大家。

pink555

以下是引用alohabrian在2009-2-17 22:52:00的发言：

By competing with rodents for seeds, black ants help control rodent populations that pose a public health risk.  However,
a very aggressive species of blank ant, the Loma ant, which has
recently invaded a certain region, has a venomous sting that is often
fatal to humans.  Therefore, the planned introduction into that region of ant flies, which prey on Loma ants, would benefit public health.

 

 

Which of the following, if true, most strengthens the argument?

 

 

A.    Ant flies do not attack black ants other than Loma ants.

2. Loma ants are less effective than many bird species in competing with rodents for seeds.
3. Certain other species of black ants are more effective than Loma ants in competing with rodents for seeds.
4. The sting of Loma ants can also be fatal to rodents.
5. The use of pesticides to control Loma ants could have harmful effects on the environment.

A和C之间徘徊。第一眼看是A,但想想C也对。

A就不说了。说说对C的理解

我认为C说的是这么回事：Loma争抢seeds的效果比不上其他black ants,又由于competing seeds决定了rodent population, 所以Loma在抑制rodent population上发挥的作用不重要。
于是把引入ant flies杀掉Loma，不会影响对于rodent population的控制效果。于是C也strenthen了原文。

我觉得A和C都在strengthen原文。

并且A和C必须同时成立。


请教大家。

我觉得A只是把原文which prey on Loma ants给重复了一下，并没有递进一部。因为原文并没有说ant flies 会杀掉其他的black ants

而C重复了原文的意思还递进了一下， 说明杀掉Loma ants对于抑制rodent population更没什么影响，加强了原文

alohabrian

但是楼上MM，OA是A奥。

pink555

有点晕了 难道说C是错在certain和比较上？ 一些其他品种比Loma要更有竞争力并没有否定掉Loma的竞争力？也许Loma还是有竞争力的，只是没有其中的一部分（可能很少）的品种的竞争力大？

shelia006

这题的答案很显然是A。to achieve the intention of the argument that ant flie will benefit the public health, so ant flie is helpful in preying on only Loma ohter than any other black ants which are good to public health.

smallmole

斯宾塞

我也觉得介题很伤脑筋诶

yubem

应该是A答案。会在Ａ和Ｃ之间犹豫。
但是Ｃ是不对的，原因是原文着眼点在引入一个东西可以抑制某个Ant并达到什么效果，这个和Ant里面种类区别没有关系。所以不合适。

199249712

我觉得问题在于C的一个词的表述 【effective】

B.    Certain other species of black ants are more effective than Loma ants in competing with rodents for seeds.

【我认为C说的是这么回事：Loma争抢seeds的效果比不上其他black ants,又由于competing seeds决定了rodent population, 所以Loma在抑制rodent population上发挥的作用不重要。】

Loma争抢seeds的效果比不上其他black ants,
的确 效果不如其他的蚂蚁 但是它还是有效果
不管效果的强弱如何 它还是有效果的

因此C是无关的 甚至有一点点削弱
因为就算效果不佳 但不等同于无甚效果 你把它灭了 就是削弱了public health
如果用XDF的话来说 C就是比较错误

这两天做狒狒的时候看到好多tricky的选项 都是这么表述的 什么【effective】【most believe】吖的。。都是大骗子
T.T

199249712

A就是bible说的那种选项 eliminate 其他的gap
因为你在读的时候应该会想到 这个flies要杀这个毒蚂蚁 那杀不杀其他的蚂蚁呢？
【联想到忘了是不是OG得一个逻辑题 什么农药除草 也除掉了农作物的weaken题】
那么A正好消除了这个gap。。专灭毒蚂蚁的东东。。