People could be changing how bears sleep, and not in a good wayLindsay Dodgson
Bear hibernation is part of a bear's annual cycle of activity, when its metabolic systems change and activity pauses for a period of time varying with the habitat's climate. Grizzly bears hibernate for 5–7 months each year. But it isn't as clear-cut as curling up and going to sleep ...
By this definition, bears don't hibernate, because their body temperature drops only slightly and they awake relatively easily. Not everyone accepts this narrow definition, however. For the purposes of this article, we'll use the term hibernation to describe any long-term reduction in body ...
由第四段第一句 Some animals begin to collect their winter food in autumn.可知, 有些动物在秋季 就开始储存食物。 故选C。 4.B 细节 题。 第五段前 句Some other animals sleep for a long time in winter. They are in hibernation.和该段末句 Bears, snakes and frogs are such animals.可判断,...
根据“Some animals begin to collect their winter food in autumn.”可知动物们收集食物是为了度过冬季,D选项“他们可以吃秋季收集的事物”符合语境。故选D。 (4)题详解: 根据“They’ re in hibernation(冬眠). ”可知有些动物冬季会冬眠,冬眠意味着他们冬季要睡很长一段时间,A选项“一些其他的动物在冬季会...
Female bears usually give birth during hibernation. (Photo Credit: Sergey Uryadnikov/Shutterstock) How Long Do Bears Hibernate? How long a bear hibernates depends on the climatic conditions of the residing area. In the colder regions of Alaska, bears can hibernate for up toseven months, while...
Bears hibernate through the winter. They take a long sleep. This helps them live through the cold months. They don't have to worry about finding food. Some animals do the same thing in the summer. They have a summe...
Females go into a sort of semi-hibernation toward end of their pregnancy, but they don't experience the drop in heart rate and body temperature that characterizes real hibernation. They mostly just rest and sleep a lot in the months immediately before and after they give birth. However, ...
Some other animals sleep for a long time in winter.They are in hibernation(冬眠).They eat much food in autumn. In winter they eat nothing. They're very hungry when they wake up in spring. They usually look for food in March or April. Bears,snakes and frogs are such animals. Winter ...
They are safe and warm in their homes in winter.Some other animals sleep for a long time in winter. They are in hibernation(冬眠). They eat much food in autumn. In winter they eat nothing. They're very hungry when they wake up in spring.They usually look for food in March or April...