求助：GMAC2019年新发布的难题中这道CR怎么做呀？

Ivia雅思要考720 · 发表于 2019-9-30 08:41:15

请广大兄弟姐妹一起讨论一下下面这道题怎么做！！！这是gmac最新发布的难题资料（700-800水平），我实在无法理解正确答案。正确答案见帖子末尾！！
（感谢大家！！！）
Scientist: In an experiment, dogs had access to a handle they could pull to release food into
a nearby enclosure that contained a familiar dog and nothing else, contained an unfamiliar dog
and nothing else, or was empty. The dogs typically released more food to the familiar dog than
to the unfamiliar dog. This suggests that dogs are more motivated to help other dogs they know
than to help unfamiliar dogs.

The scientist's argument would be most strengthened if it were true that, in the experiment, the
dogs with access to the handle tended to release more food when
A. the behavior was being encouraged by a familiar person than when it was being encouraged
by an unfamiliar person
B. the enclosure was empty than when it contained an unfamiliar dog
C. An unfamiliar dog in the enclosure was displaying hostility toward them than when an
unfamiliar dog in the enclosure appeared friendly
D. a dog in the enclosure appeared uninterested in food already released into the enclosure than
when it appeared interested in that food
E. a familiar dog was in the enclosure than when a familiar dog was visible but the enclosure
was empty

（正确答案：E）

syhx13 · 发表于 2019-10-2 16:11:09

题目说的是狗狗会选择给认识的其他狗的笼子投喂更多的食物，而不是给其他不熟的狗或者空的笼子投喂更多的食物。
结论：狗狗更倾向于帮助它们熟悉的其他狗。

题目最后问的是当在试验里，狗狗给以下哪种情况增加了投喂可以加强原结论。
A：原题目讨论的是狗和狗之间的投喂行为，和狗和人类之间没关系。
B：相比不熟的狗的笼子，狗会给空笼子投更多食物。无法加强说明狗和熟悉的狗之间的关系。
C：狗会给对他们更凶的不熟悉的狗投喂更多食物而不是给相比更友善的狗投喂。这个选项某种程度削弱了原结论。
D：狗对食物是不是有兴趣的程度和熟不熟悉的讨论无关。
E：说明狗的熟悉程度更重要。

这一题我的感觉是重点要知道讨论的对象是狗和狗之间熟不熟这件事情。

ShayneYang · 发表于 2019-10-3 10:50:32

结论：相比于不熟悉的狗，狗狗更倾向于他们熟悉的狗给予帮助。
ABCD完全都是无关选项，然后E的话是说相比于那些没有被关起来的狗，他们更倾向于把食物给关起来了的狗，说明他们把食物给熟悉的狗的确是在*帮助*这些狗，因此E选项加强。

求助：GMAC2019年新发布的难题中这道CR怎么做呀？

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