请教NN们个问题 OGRC中 371页的 68题

lizhixiaoma · 发表于 2009-2-22 20:44:00

请教NN们个问题 OGRC中 371页的 68题为什么选E 不选A呢？

lizhixiaoma · 发表于 2009-2-22 22:04:00

有没有人解答一下这个问题啊 ···

lukeleng · 发表于 2009-2-23 16:12:00

however, researchers as yet have been unable to detect electrical signals emanating from termite mounds, 然而，研究人员还不能检测到从白蚁穴发出的电信号．

This ability to quickly locate unseen

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

suggests让人想到但还不能是结论性的依据（结论性的依据该是要能检测到从白蚁穴发出的电信号）

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

qiongyue0312 · 发表于 2009-2-23 20:09:00

这道题我也有点想不明白，为什么不选A

qiongyue0312 · 发表于 2009-2-24 10:54:00

不能选A是因为 the researchers as yet have been unable to detect electrical signals emanating from termite mounds,where the favorite food of anteaters live.

而A是已经有结论了，说食蚁兽用electroreceptors to locate unseen prey.

E 是说食蚁兽以如此快的速度定位白蚁，不能仅仅是一个巧合。

A是结论性的肯定，而E是根据蚁兽定位的速度来的一个推测。

lizhixiaoma · 发表于 2009-2-26 11:02:00

谢谢了：）

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