问题：
[答案]A pick up social signals from non-living rats
答案：
解析:本题目为细节题,考察具体细节。根据题干关键词 Quinn and her colleagues 和 a test 定位到第一段第二句。To find out if this extends to non-living beings, Loleh Quinn at the University of California, San Diego, and her colleagues tested whether rats can detect social signals from robotic rats. 为了查明这是否延伸到了非生物, Quinn 和她的同事测试了老鼠能否从机器老鼠身上探测到社会信号。正确答案 A 是原文的同义替换。选项B 的 distinguish a friendly rat from a hostile one 区分友好的老鼠和敌对的老鼠,并未提及,是常识性干扰。选项 C 的 attain sociable traits through special training 通过特殊训练获得社交品质,原文并未提及,属于无中生有。选项 D 的 send out warning messages to their fellow 向它们的同伴发出警告信息,原文并未提及, 属于无中生有。