Most people believe that bears hibernate (冬眠). However, according to research, what bears actually do resemblesmore of a deep sleep than hibernation. The reason for hibernation and for deep winter sleep is the same. During the wintermonths, food is rare. It is also difficult for some anima...
Bears often hibernate during winter. What triggers this behavior? A. Lack of food. B. Cold weather. C. Fear of predators. D. Boredom. 相关知识点: 试题来源: 解析 A。本题考熊冬眠的触发因素。选项 A,冬季食物缺乏促使熊冬眠;选项 B,寒冷天气不是直接触发因素,食物缺乏更关键;选项 C,害怕捕食...
Bears are well known for their winter sleep, referred to as torpor. Bears enter a lighter state of dormancy, where their body temperature slightly decreases, and metabolism slows down, but they remain more alert and can awaken more easily. During this period, bears rely on fat reserves accumul...
Bears usually hibernate in winter. What does hibernate mean? A. Run fast B. Swim well C. Sleep deeply D. Fly high 相关知识点: 试题来源: 解析 C。熊通常在冬天冬眠。冬眠的意思是深度睡眠。跑很快、游得好、飞得高都不是冬眠的意思。