大神大神！！求答疑解惑！！求解阅读精解63篇里面一个问题

marvelmqh · 发表于 2013-8-27 16:58:45

其实我是在阅读63篇里边找的

文章原文

Passage 50

Australian researchers have discovered electroreceptors

(sensory organs designed to respond to electrical fields)

clustered at the tip of the spiny anteater’s snout. The

researchers made this discovery by exposing small areas of

(5) 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

( 10) 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

(15) 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,

( 20) 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

and quickly locating nesting chambers. 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.

问题
Which of the following can be inferred about anteaters
from the behavioral experiment mentioned in the
second paragraph?
(A) They are unable to distinguish between stimuli
detected by their electroreceptors and stimuli
detected by their tactile receptors.
(B) They are unable to distinguish between the electrical
signals emanating from termite mounds and those
emanating from ant nests.
(C) They can be trained to recognize consistently the
presence of a particular stimulus.
(D) They react more readily to strong than to weak
stimuli.
(E) They are more efficient at detecting stimuli in a
controlled environment than in a natural
environment.

他们可以通过训练blabla是怎样从上文得出的？？

求大神答疑解惑！！

enkyklios · 发表于 2013-8-27 17:17:15

Australian researchers have discovered electro receptors(sensory organs designed to respond to electrical fields)clustered at the tip of the spiny anteater's snout. The researchers made this discovery by exposing small areas of(5) 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( 10)electrical field strengths about 1，000 times greater than those known to excite electro receptors.
　　Having discovered the electro receptors， researchers are now investigating how anteaters utilize such a sophisticated sensory system. In one behavioral experiment， researchers(15)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 electro receptors to detect electrical signals given off by prey; however，( 20)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 and quickly locating nesting chambers. This ability quickly(25)to locate unseen prey suggests， according to the researchers，that the anteaters were using their electro receptors to locate the nesting chambers.

就是句吧 In one behavioral experiment， researchers(15)successfully trained an anteater to distinguish between two troughs of water

大神大神！！求答疑解惑！！求解阅读精解63篇里面一个问题

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