2道GWD，准考生，谢各位帮助！！

iamdurant

2道GWD，准考生了，求大神指点谢谢
T-3-Q24.
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.这题我选了C，答案是A,求解释谢谢！

T-3-Q40.  
Boreal owls range over a much larger area than do other owls of similar size. The reason for this behavior is that the small mammals on which owls feed are especially scarce in the forests where boreal owls live, and the relative scarcity of prey requires the owls to range more extensively to find sufficient food.
Which of the following ,if true, most helps to confirm the explanation above?
A. Some boreal owls range over an area eight times larger than the area over which any other owl of similar size ranges
B. Boreal owls range over larger areas in regions where food of the sort eaten by small mammals is sparse than they do in regions where such food is abundant.
C. After their young hatch, boreal owls must hunt more often than before in order to feed both themselves and their newly hatched young
D. Sometimes individual boreal owls hunt near a single location for many weeks at a time and do not range rather than a few hundred yards.
E. The boreal owl requires less food, relative to its weight, than is required by members of other owl species.
这题我选的C,答案是B,解析说mammal的食物没了，所以mammal的数量少了，所以以mammal为食的owl也就要range over area了，这其中没有过度推断吗？
小弟选的C,不正强调了owl没有食物就不得不range over area吗？

 快考试了，求高手指点，感激！！！

RichardVeritas

T-3-Q40.  
Boreal owls range over a much larger area than do other owls of similar size. The reason for this behavior is that the small mammals on which owls feed are especially scarce in the forests where boreal owls live, and the relative scarcity of prey requires the owls to range more extensively to find sufficient food.
Which of the following ,if true, most helps to confirm the explanation above?
A. Some boreal owls range over an area eight times larger than the area over which any other owl of similar size ranges
B. Boreal owls range over larger areas in regions where food of the sort eaten by small mammals is sparse than they do in regions where such food is abundant.
C. After their young hatch, boreal owls must hunt more often than before in order to feed both themselves and their newly hatched young
D. Sometimes individual boreal owls hunt near a single location for many weeks at a time and do not range rather than a few hundred yards.
E. The boreal owl requires less food, relative to its weight, than is required by members of other owl species.
答案分析
A:重复表达了要解释的现象，但没有confirm the explanation - Boreal owls range over a much larger area because doing so is necessary for them to find sufficient food
B. 正确。对比Boreal owls扑食的small mammals的需要食物多少情况， Boreal owls 飞的范围大小变化。可以帮助支持Boreal owls 飞的范围大是和扑食相关。
C. hunt more often 和 Boreal owls range over a much larger area 不是一回事，无关。而且After their young hatch指的也是一个特定时段，不普遍。
D. 无关。题干问得是confirm the explanation。有些鸟有时不飞那么远，可以有各种可能，但和题干问的无关
E. 不解释，逻辑上起相反作用。

Richard 770 逻辑答题讨论
https://forum.chasedream.com/forum.php?mod=viewthread&tid=1303467&fromuid=1294035

RichardVeritas

T-3-Q24.
逻辑关联事物：
1. farmers want to use small amount of poisoned rice to reduce the population of red-winged blackbirds.
2. residents concerned about population of certain species of rare migratory birds.

考虑2情况下，为什么1可以？即1不会妨碍到2

不看答案，我在想red-winged blackbirds应该不算certain species of rare migratory birds之内。

看答案：
A. In the region where the red-winged blackbirds stop, they are the first birds to be present in the spring.
逻辑联接可以有很多个方向，这题答案A给的就是一个一般想不到的方向。同意前面分析，small amount of rice, red-winged blackbirds 先来，所以这帮鸟吃完了，就不会伤害到后来的certain species of rare migratory birds。注意答案不需要确保成立，只要帮助解释可能性就可以了。

B. The poison that farmers want to use does not kill birds but rather make them incapable of producing viable eggs.
错。题干没说要毒死。不生还是会影响population, 包括2在内。

C. Since rice is not raised in midland province, few species of birds native to the province normally eat rice.
birds native to the province  和题干问的 certain species of rare migratory birds 不是一回事，无关

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.
D.E 明显无关
Richard 770 逻辑答题讨论
https://forum.chasedream.com/forum.php?mod=viewthread&tid=1303467&fromuid=1294035

dsy0506

SallySun 发表于 2011-7-21 21:00
1#解释不对吧....村民是担心毒死其它的比较珍贵的迁徙的鸟类，不是说担心毒死red鸟...就是因为red鸟在每年 ...

同意，题干中要保护的不是red鸟而是另一种稀有的鸟类，选A是说等red鸟吃完了毒死就不会伤害其他鸟类了，但还是觉得A有点不是那么好理解

cicy11

1L的说法根本不对。。。。毒害的就是red鸟。。你的A成了反对协会的看法的了。。。

418722521

我觉得a也有问题啊，他说的是秋天吃鸟，但是a说的是in the spring 给他们吃药

SallySun

1#解释不对吧....村民是担心毒死其它的比较珍贵的迁徙的鸟类，不是说担心毒死red鸟...就是因为red鸟在每年春天先来，吃完了那些毒米，其它后到的迁徙的鸟才不会被毒死...

jianaozhonghua

没事  大家一起加油~

iamdurant

真的辛苦了！！

iamdurant

非常感谢大哥指点，顿悟！！！！