T-3-Q24. 百思不得其解啊~

gmatbiguo

Each year red-winged blackbirds stop in a certain region of Midland Province on their spring and fall migration. In the fall, they eat a significant portion of the province’s sunflower crop. This year Midland farmers sought permits to set out small amounts of poisoned rice during the blackbirds’ spring stop in order to reduce the fall blackbird population. Some residents voiced concern that the rice could threaten certain species of rare migratory birds. Nevertheless, the wildlife agency approved the permits.

Which of the following, if true, most helps to justify the wildlife agency’s approval of the permits, given the concern voiced by some residents?

A.    In the region where the red-winged blackbirds stop, they are the first birds to be present in the spring.
B.    The poison that farmers want to use does not kill birds but rather make them incapable of producing viable eggs.
C.    Since rice is not raised in midland province, few species of birds native to the province normally eat rice.
D.    Without the permit, any farmers shown to have set out poison for the blackbirds would be heavily fined
E.    The poison that farmers got approval to use has no taste or smell that would make it detectable by birds.
答案选A，谁呢帮忙说明一下为什么选A。

kikisunflower

M省的人要灭blackbirds

concern：灭blackbirds的时候会灭了其他珍稀鸟

题目其实就是weaken这个concern，就是说不会威胁到其他珍稀鸟的安全

A. blackbirds每次都最先迁徙到M省，会把毒药先吃完的，威胁不到其他鸟
B. 吃了毒药不能下蛋，这可以严重威胁珍稀鸟的种群繁衍，错
C. 提到本地鸟（原文是说迁徙的鸟），无关，错
DE明显错的

gmatbiguo

M省的人要灭blackbirds

concern：灭blackbirds的时候会灭了其他珍稀鸟

题目其实就是weaken这个concern，就是说不会威胁到其他珍稀鸟的安全

A. blackbirds每次都最先迁徙到M省，会把毒药先吃完的，威胁不到其他鸟
B. 吃了毒药不能下蛋，这可以严重威胁珍稀鸟的种群繁衍，错
C. 提到本地鸟（原文是说迁徙的鸟），无关，错
DE明显错的

-- by 会员 kikisunflower (2011/5/8 11:19:34)

谢谢！我把题目看成会威胁到该鸟本身，该打！

toulouselucas

M省的人要灭blackbirds

concern：灭blackbirds的时候会灭了其他珍稀鸟

题目其实就是weaken这个concern，就是说不会威胁到其他珍稀鸟的安全

A. blackbirds每次都最先迁徙到M省，会把毒药先吃完的，威胁不到其他鸟
B. 吃了毒药不能下蛋，这可以严重威胁珍稀鸟的种群繁衍，错
C. 提到本地鸟（原文是说迁徙的鸟），无关，错
DE明显错的

-- by 会员 kikisunflower (2011/5/8 11:19:34)

这个A选项，没有说blackbird会全部吃完毒药，如果还有残余毒药，也会影响其他migratory bird的。。我觉得不能推断出B把全部毒药吃完

yuniko321

In the fall, they eat （a significant portion） of the province’s sunflower crop. This year Midland farmers sought permits to set out（ small amounts） of poisoned rice

原文看出：迁徙鸟的食量很大，farmers只是放了少量的poisoned rice。
迁徙鸟第一个到达，所以会把少量的poisoned rice都吃完，不会威胁到其他migratory bird

aaron22

我把rare migratory birds理解成少迁徙的鸟 也就是native to the province，所以选的C

是不是这样理解必须是rarely才行？？

melo23e

Some residents voicedconcern that the rice could threaten certain species of rare migratory birds居民担心米会伤害到很少迁徙的鸟，那就是相当于本地的鸟吗，C怎么能直接当无关选项排除呢？

slgbond

Problem-Plan-Paradox这种题很常见
关注两步；
PLan： to reduce the fall blackbird population；set out small amounts  of  poisoned rice
Paradox：poisoned rice threaten rare migratory birds
话题是migratory birds（候鸟）
B、E讲The poison 干掉，D讲 any farmers 干掉
C 不是本地rice，本地的鸟儿不吃；
即使是事实，和原文PLan、Paradox论述没啥关系
A  the first birds 加 small amounts，能得出PLan是对的

imJoanie

C提到本地鸟怎么就无关了？rare migratory birds啥意思？还有文章说为了减少 the fall blackbird population，A项说spring没人解释？我还是认为应该选C 好奇怪这题讨论帖好少

imJoanie

啊，rare migratory birds是珍稀的候鸟的意思啊 我的天 这样C就无关了。。。。。