参考答案

正确答案：B
解析：细节题。根据十四段最后两句A zookeeper once called earthquake researchers to say that his cougar had been acting strangely. It turned out that the cat had an upset stomach. (一次一个动物园饲养员打电话给地震研究员，说他的美洲狮表现很奇怪，结果是那只“猫”胃口不好)，所以这里的cat指的是cougar。这道题的答案是B。