GWD31-6-40, 大家都选什么?

Each year red-winged blackbirds stop in a certain region of Midland Province on their spring and fall migrations. 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 concerns voiced by some residents?

1. In the region where the red-winged blackbirds stop, they are the first birds to be present in the spring.

2. The poison that farmers want to use does not kill birds but rather makes them incapable of producing viable eggs.

3. Since rice is not raised in Midland Province, few species of birds native to the province normally eat rice.

4. Without the permit, any farmers shown to have set out poison for the blackbirds would be heavily fined.

5. The poison that farmers got approval to use has no taste or smell that would make it detectable by birds.

Answer:

首先想说句,LZ应该标错题号了,我的GWD31套是第30道题.

这道题选A,A就是在说,在这个地方,blackbird比其他鸟都先到.这就给农民提供了一个条件--就是在其他鸟没到之前用那有毒的大米把这些坏家伙干掉.因此不会影响到别的迁徙的鸟.

这样,那些动物协会的支持这个就理所当然了.

对其进行取非,blackbird不是最先到的鸟,说明它和别的种类的鸟没有区别,自然使用这个有毒的大米会影响到别的鸟了

语文很烂,个人观点,仅供参考~

GWD里重题很多，我说31的GWD指的是GWD31, 这是第六套里的题.

那能不能说说C为何不对

呵呵~是我搞错题号了~~谢谢LZ指出

C选项是这样的,你忘记了题目中的一个信息点:migratory birds

而C讲的是native鸟.超出了讨论的范围~~

就是无关词排除

看到关系就搭桥

啊!看来每个单词都得看清楚了. 谢谢LIUBIN兄弟!!!