请问我该如何翻译呢？

Believer6 · 发表于 2012-11-13 12:06:02

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.

这段话中，however，和still，是怎么个启程转折啊？

4. 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.
为什么选C不选B呢？

请各位NN赐教。。。。谢谢。

Believer6 · 发表于 2012-11-13 18:54:25

再问一遍

请问我该如何翻译呢？

所属分类: GMAT考试

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