(单选题)

Why do animals stay awake at night? ( )

A.to travel to distant places

B.to avoid contact with people

C.to look for food

D.to guard against possible stacks

参考答案：B

参考解析：

细节题。题干询问的是原因，根据首段...staying awake at night to avoid human beings可知它们的目的是为了躲避人类，选项B表述正确。选项A：去遥远的地方，根据Many mammals may move around less or travel to distant places to avoid contact with people.可知它是躲避人类的途径；选项C：寻找食物，根据...spend less time looking for food.可知其表述有误；选项D：预防可能的袭击，根据By being awake at night, mammals can also be on guard against possible attackers可知它只是躲避人类中所包含的内容。故本题正确答案选B。

知识点：细节题英语阅读理解通用英语