OG 一道题68题 请教思维方式

lydiajiali

68 The passage suggests that the researchers mentioned in the second paragraph who observed anteaters break into a nest of ants would most likely agree with which of the following statements?

E.The speed with which the anteaters located their prey is greater than what might be expected on the basis of chance alone.

为什么不是A呢，原文虽然提到食蚁兽在捕食上的速度，总觉得比较牵强。然而A. the event they observed provides conclusive evidence that anteaters use their electroreceptors to locate unseen prey.原文的最后的“according to the researchers" 不是能很好的吻合?

到底思维方式要在哪方面改进呢?或者说出题人的用意是什么呢?

nuj_am

E排除他因

lydiajiali

对不起,还是不明白什么叫排除他因。

而且不明白A为什么不可以?

lukeleng

我做这题时也错了

与 hypothesis是一致的,原文用的是consistent,不是conclusive, 原文是Such evidence is consistent with researchers’ hypothesis that anteaters use electroreceptors to detect electrical signals given off by prey; however,

 hypothesis有两点1,anteaters use electroreceptors :2,to detect electrical signals given off by prey.however, 后面的话没有证明第二点.所以没有发现conclusive evidence,.

This ability quickly

(25)to locate unseen prey suggests, according to the researchers, that the anteaters were using their electroreceptors to locate the nesting chambers.

suggests和povides conclusive evidence还是有区别的

[此贴子已经被作者于2007-9-21 7:44:01编辑过]

danielzh_sg

同感，根据最后一句话，确实很难体会到suggest的语感以及该句在本文中的作用，请大牛们赐教！

yanzie

也一样迷惑中

踢

全文如下（大全47/63）----为什么lz不把原文贴出来啊？

Passage 47 (47/63)

Australian researchers have discovered electroreceptors (sensory organs designed to respond to electrical fields) clustered at the tip of the spiny anteater’s (spiny anteater: n. 〈动〉针鼹) snout. The researchers made this discovery by exposing small areas of the snout to extremely weak electrical fields and recording the transmission of resulting nervous activity to the brain. While it is true that tactile receptors, another kind of sensory organ on the anteater’s snout, can also respond to electrical stimuli, such receptors do so only in response to electrical field strengths about 1,000 times greater than those known to excite electroreceptors.

Having discovered the electroreceptors, researchers are now investigating how anteaters utilize such a sophisticated sensory system. In one behavioral experiment, researchers successfully trained an anteater to distinguish between two troughs of water, one with a weak electrical field and the other with none. Such evidence is consistent with researchers’ hypothesis that anteaters use electroreceptors to detect electrical signals given off by prey; however, researchers as yet have been unable to detect electrical signals emanating from termite mounds, where the favorite food of anteaters live. Still, researchers have observed anteaters breaking into a nest of ants at an oblique angle (oblique angle: 斜角(包括锐角和钝角)) and quickly locating nesting chambers. This ability quickly to locate unseen prey suggests, according to the researchers, that the anteaters were using their electroreceptors to locate the nesting chambers.

5.     The passage suggests that the researchers mentioned in the second paragraph who observed anteaters break into a nest of ants would most likely agree with which of the following statements?

(A) The event they observed provides conclusive evidence that anteaters use their electroreceptors to locate unseen prey.

(B) The event they observed was atypical and may not reflect the usual hunting practices of anteaters.

(C) It is likely that the anteaters located the ants’ nesting chambers without the assistance of electroreceptors.

(D) Anteaters possess a very simple sensory system for use in locating prey.（E）

(E) The speed with which the anteaters located their prey is greater than what might be expected on the basis of chance alone.

期待nn的回答（答案是E)

[此贴子已经被作者于2007-10-9 14:51:04编辑过]