閱讀難度：

Researchers show that rats are actually kind and generous, contrary to the general impression they are pests, the Daily Mail reported.

Chicago University scientists housed rats in pairs and then placed one in a transparent tube inside the cage, and found that the second rat was distressed until it worked out how to free the first one.

The creatures also selflessly shared treats with their cage-mates. The roaming rat became agitated at the sight of its trapped friend.

Even more, the free animal learned how to open the tube door, without being shown, to free its mate. （點擊《每日郵報》查看原文）

老鼠其實慷慨又友好

???????據英國《每日郵報》報道，人們通常認為老鼠是害蟲，研究人員發現，其實它們慷慨友好。

???????來自美國芝加哥大學的科學家將老鼠成對圈養，之后把其中一只關于籠內的透明管道，結果發現，它的同伴會很悲傷，直到找到釋放被關者的方法。

???????它們會與籠中同伴無私的分享食物。外面的老鼠看到被關同伴會焦慮不安。

???????甚至，盡管沒人教它們，自由老鼠還會學著開鎖，試圖釋放被關者。

(China.org.cn February 2, 2012)