LSAT15-1-3？？？

bob

15-1-3
3. Deer mice normally do not travel far from their nests, and deer mice that are moved more that half a kilometer from their nests generally never find their way back. Yet in one case, when researchers camped near a deer mouse nest and observed a young deer mouse for several weeks before moving it to an area over two kilometers away, the deer mouse found its way back to its nest near their camp I unless than two days.
Which one of the followings, if true, most help to explain how the deer mouse might have found its way back to its nest?
(A) The area to which the deer mouse was moved was dryer and more rocky than the area in which its nest was located.
(B) The researchers released the deer mouse in a flat area across which their campfire smoke drifted.
(C) There were very few deer mice in the area to which the deer mouse was moved.
(D) The researchers had moved the deer muse in a small dark box, keeping the mouse calm before it was released.
(E) Animals that prey on deer mice were common in the area to which the deer mouse was moved.
答案是B，意思大概是说老鼠顺着烟找到了家，但是，文中并没有给出信息说老鼠能辨任烟，B显然是假定老鼠能辨任烟。如果B成立，那么A又为什么不可以成立，我们同样可以假定老鼠能分辨dryer and more rocky这样的地形特点，那么也可以找到家。

卧室春竹

但是.....     researchers camped near a deer mouse nest  阿

bob

还是没看懂，请教高手？？？

tbs

意思是说researchers camped near a deer mouse nest 所以老鼠可以根据their campfire smoke 找到nest

bob

问题是凭什么老鼠可以闻见烟味？？如果可以这么假设，为什么不可以假设老鼠可以分辨地形，比如选A。

joywzy

bob, 这是解释现象题啊.不是假设题,只有B能解释,不然你选什么?
这跟地形有什么关系.

redli

个人见解；
文中第一句话“normally"是一个概括，也就是说，”deer mice that are moved more that half a kilometer from their nests generally never find their way back”，这其中已经包括了各种地形，当然也包括A中地形。
A）只是和文中“one case”对比，但不能突破“normally”的限制。所以不选
B）给出了“normally”不曾出现的信息，所以解释了the speciality of the "one case"

bob

redli,哦，切中要害，对对，谢谢。
joywzy,谢谢，复习得如何了？