When it is very cold, bears hibernate. What are bears NOT doing when they hibernate? A. They are sleeping. B. They are eating. C. They are moving. D. They are breathing. 相关知识点: 试题来源: 解析 C。解析:冬眠时,熊在睡觉、呼吸但不会移动和进食。A 选项睡觉是冬眠的主要特征;D 选项...
In late November and early December, black bears head to their caves to sleep away the winter, or hibernate (冬眠). Their body temperature is lowered, and their breathing slows down while they live off the huge amounts of body fat they stored up during the summer and fall. This way, th...
Animals can hibernate for part or all of the winter. It’s hard for them to find things to eat. When they go to sleep, they don’t need much food. Bears, hedgehogs (刺猬) and chipmunks (花栗鼠) go to sleep in their homes. Frogs(青蛙) and snakes hibernate, to...
Snakes, frogs and bears hibernate in winter.Many animals stay active in winter and adapt to (适应) the cold weather. Some animals save food in summer and autumn and eat it in winter. This is what squirrels do. Other animals make changes in their bodies or behavior (...
With the temperatures dropping at this time of year, many of us tend to hibernate (冬眠) inside our homes. But, hibernating is for bears. As humans it’s important to stay active through all four seasons. Yet, a poll of 5,000 people found that 30 percent get no exercise at all ...
根据第一段的第二句 "The tree needs to eat the glucose to grow, and we know it is eating because the leaves are turning green" 可知,树消耗葡萄糖来成长而不是叶绿素,因此A错误;根据第三段的第三句 "Actually, trees hibernate just like bears do!" 可知,树和熊一样需要冬眠,因此B正确;根据第...
When winter left us, only three quarters of the year when no place to winter swimming polar bear, bears can not hibernate, squirrels do not store food in winter, penguins complaining about human selfishness. This is caused by global warming, and the consequences, is that we human beings do...
They cannot hibernate as other bears do as they cannot lie down because of the bars they have to lie on.These bears are kept for their bile(胆汁)and the process of extracting(提取)it would make you weep.These beautiful creatures have tube inserted into their abdomens(腹部)leading to their...
Black bears feed on leaves, herbs, fruit, berries, insects, fish, and even larger animals.【4】Unlike squirrels, woodchucks, and many other woodland animals, bears do not actually hibernate. Although the bear does not eat during the winter months, sustaining itself from body fat, its temperatu...
Do you know how animals spend their winter?The biggest problem for most animals inwinter is finding enough food.If an animal can not find enough insects or green plants and so on,it will choose to hibernate.This deep sleep helps them to save energy, and live through the winter with little...