T-3-Q3 急啊 和 OG69有冲突

pipilovelail

T-3-Q3. BE争议题
Scientists have made genetic modifications to cotton to increase its resistance to insect pests. According to farmers’ report, the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not. Therefore, since the modified seed costs more than ordinary seed without producing yields of higher market value, switching to the modified seed would be unlikely to benefit most cotton farmers economically.
Which of the following would it be most useful to know in order to evaluate the argument?
A.    Whether farmers who tried the modified cotton seed had ever tried growing other crops from genetically modified seed.
B.    Whether the insecticides typically used on ordinary cotton tend to be more expensive than insecticides typically used on other crops.
C.    Whether for most farms who grow cotton it is their primary crop
D.    Whether the farmers who have tried the modified seed planted as many acres of cotton, on average, as farmers using the ordinary seed did.
E.    Whether most of the farmers who tried the modified seed did so because they had previously had to use exceptionally large quantities of insecticide.

这是GWD的题目 BE有争议，但是最后结论关心的是经济收益，所以相比较其他选项，B选项更正确。

这是OG12 的69题

69. Scientists have modifi ed feed corn genetically, increasing its resistance to insect pests. Farmers who tried out
the genetically modifi ed corn last season applied less insecticide to their corn fi elds and still got yields
comparable to those they would have gotten with ordinary corn. Ordinary corn seed, however, costs less,
and what these farmers saved on insecticide rarely exceeded their extra costs for seed. Therefore, for most
feed-corn farmers, switching to genetically modifi ed seed would be unlikely to increase profi ts.
Which of the following would it be most useful to know in order to evaluate the argument?
(A) Whether there are insect pests that sometimes reduce feed-corn yields, but against which commonly used
insecticides and the genetic modifi cation are equally ineffective
(B) Whether the price that farmers receive for feed corn has remained steady over the past few years
(C) Whether the insecticides typically used on feed corn tend to be more expensive than insecticides typically
used on other crops
(D) Whether most of the farmers who tried the genetically modifi ed corn last season applied more insecticide
than was actually necessary
(E) Whether, for most farmers who plant feed corn, it is their most profi table crop
Argument Evaluation
Situation Farmers who grew feed corn genetically engineered to be pest resistant got yields
comparable to those of farmers growing ordinary feed corn, but did so while using less
pesticide. Since the amount saved on pesticide was rarely in excess of the extra costs for
the genetically modifi ed corn, most farmers will probably not increase profi ts by choosing
the genetically engineered variety.
Reasoning Which would be most useful to know in evaluating the argument? To answer a question such
as this, one should look for information that would strengthen or weaken the argument.
If one had information that the farmers growing the genetically modifi ed corn could
have increased their yields last year at lower cost, this would be helpful in evaluating the
argument, because this would show that the argument is weak.
A It does not matter to the argument whether there are pests against which pesticides and genetic
resistance are equally ineff ective, because that is compatible with there being pests against which
they are not equally eff ective.
B Whether prices of feed corn go up or down aff ects the comparison groups equally.
C Th e relative cost of insecticides for other crops has no bearing on the argument because the
argument is concerned with only feed corn.
D Correct. Th is option provides the information that it would be most useful to know in evaluating
the argument. It shows that farmers growing genetically modifi ed corn last year could have
attained higher profi ts than they in fact did.
E Th e argument concerns only the relative profi tability of growing one variety of feed corn versus
another.
Th e correct answer is D.

这两道题目虽然题干和选项都很像，但是其实还是很不一样的。仔细看两道题目的题干，和正确选项，还有解释，就会发现不一样的地方。

卢静changsha

刚刚看了一位n人的解释，突然明白这道题了。文章说了每亩，所以D中的面积是一个无关的比较。文章说 the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not. 也就是说在正常的情况下，本身虫子也没有很多，所以新种子每亩所需的药量只是稍微少一些（因为即使是就种子也不需要太多的杀虫剂）。但我们可以想一下，如果某个地方，它的环境非常恶劣，它本身就有很多很多的虫子，那么在这种条件下新种子的优势就体现出来了。即E说的 use exceptionally large quantities of insecticide：说明在用新种子钱的这个土地环境就很恶劣了

卢静changsha

而OG那道题的D选项的思路是这样的：农民说他们所用的杀虫剂的量差不多，作者就推出switching to the modified seed would be unlikely to benefit most cotton farmers economically.
但问题是，农民说用的量差不多，那是因为真的实际上就需要用这么多，还是他们自己根据自己的主观上不太对的想法去用了这么多呢。D给出了这样一个问题。

卢静changsha

我觉得OG的D选项放在TN3中的这道题中也应该是可以选的吧

加菲猫猫

这道题我也选的E，原文中According to farmers’ report, the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not.  既然是per acre insecticide消耗量的比较，我感觉D中比较是不是种的一样多则irrelevant
一些国外GMAT论坛讨论这道题的时候也有很有人倾向于E，还没看到很有说服性的关于D的解释，期待NN

slamshady

我觉得这道题的答案应该是E，题目问的是用modified seed是否会给农民带来经济上的好处

B说是否种普通cotton所用的杀虫剂比种其他种类农作物所用的杀虫剂贵，与modified seed没什么太大关系

D说是否用modified seed的农民所种的cotton与不用modified seed的农民种得一样多。。。。仔细想想，不论对这个问题肯定或取非都得不到题干所要的答案：1.种得一样多，每亩产量modified seed如果略小一点，而所用杀虫剂的成本略低一点，那最终还是可能受益相同；2.种得不一样多，那到底是modified seed种得多呢还是普通cotton种得多呢？每亩的经济收益无法比较

再看E，E说那些种modified seed的农民过去用大量杀虫剂的，注意这里有个because，说明他们是被逼得走投无路才用这种modified seed的，同时也就说明对他们而言，用modified seed要比用一般杀虫剂节省很多（还有一点要注意，题干中是拿用modified seed的农民和不用modified seed的农民比较，而不是将用modified seed的农民自己现在和过去的情况比较，很有可能两种农民所在环境有很大不同，前者那里的虫子特别多等等）

综上所述，应该是E。。。

kakarachel

个人也倾向选E，B里的other crops可以说是无关选项，可以直接否掉。即使文章关心的是经济利益，也不应该选B

zcool

顶E。。

孙维容

同意是E~~~

windypig123

俺也选的E  对B甚不解B.    Whether the insecticides typically used on ordinary cotton tend to be more expensive than insecticides typically used on other crops.

这里有点无关了吧。是和other crops比较。但是文章强调的是基因修饰的种子呀